Date: Tue, 29 Sep 09 00:00:43 GMT Subject: hep-th daily 12 new + 8 crosses received by eprepget ------------------------------------------------------------------------------ ------------------------------------------------------------------------------ Send any comments regarding submissions directly to submitter. ------------------------------------------------------------------------------ Archives at http://arxiv.org/ To unsubscribe, e-mail To: hep-th@arXiv.org, Subject: cancel ------------------------------------------------------------------------------ received by eprepget from Fri 25 Sep 09 20:00:02 GMT to Mon 28 Sep 09 20:00:01 GMT ------------------------------------------------------------------------------ \\ arXiv:0909.4782 Date: Mon, 28 Sep 2009 14:19:34 GMT (672kb) Title: Anomalies and the chiral magnetic effect in the Sakai-Sugimoto model Authors: Anton Rebhan, Andreas Schmitt, Stefan A. Stricker Categories: hep-th Comments: 34 pages, 4 figures \\ In the chiral magnetic effect an imbalance in the number of left- and right-handed quarks gives rise to an electromagnetic current parallel to the magnetic field produced in noncentral heavy-ion collisions. The chiral imbalance may be induced by topologically nontrivial gluon configurations via the QCD axial anomaly, while the resulting electromagnetic current itself is a consequence of the QED anomaly. In the Sakai-Sugimoto model, which in a certain limit is dual to large-N_c QCD, we discuss the proper implementation of the QED axial anomaly, the (ambiguous) definition of chiral currents, and the calculation of the chiral magnetic effect. We show that this model correctly contains the so-called consistent anomaly, but requires the introduction of a (holographic) finite counterterm to yield the correct covariant anomaly. Introducing net chirality through an axial chemical potential, we find a nonvanishing vector current only before including this counterterm. This seems to imply the absence of the chiral magnetic effect in this model. On the other hand, for a conventional quark chemical potential and large magnetic field, which is of interest in the physics of compact stars, we obtain a nontrivial result for the axial current that is in agreement with previous calculations and known exact results for QCD. \\ ( http://arxiv.org/abs/0909.4782 , 672kb) ------------------------------------------------------------------------------ \\ arXiv:0909.4833 Date: Sat, 26 Sep 2009 04:22:27 GMT (18kb) Title: Notes on Matter in Horava-Lifshitz Gravity Authors: Takao Suyama Categories: hep-th Comments: 14 pages Report-no: SNUTP09-014 \\ We investigate the dynamics of a scalar field governed by the Lifshitz-type action which should appear naturally in Horava-Lifshitz gravity. The wave of the scalar field may propagate with any speed without an upper bound. To preserve the causality, the action cannot have a generic form. Due to the superluminal propagation, a formation of a singularity may cause the breakdown of the predictability of the theory. To check whether such a catastrophe could occur in Horava-Lifshitz gravity, we investigate the dynamics of a dust. It turns out that the dust does not collapse completely to form a singularity in a generic situation, but expands again after it attains a maximum energy density. \\ ( http://arxiv.org/abs/0909.4833 , 18kb) ------------------------------------------------------------------------------ \\ arXiv:0909.4850 Date: Sat, 26 Sep 2009 09:12:02 GMT (10kb) Title: Canonical supergravity with Barbero-Immirzi parameter Authors: Sandipan Sengupta, Romesh K. Kaul Categories: hep-th \\ A canonical formulation of the N=1 supergravity theory containing the topological Nieh-Yan term in its Lagrangian density is developed. The constraints are analysed without choosing any gauge. In the time gauge, the theory is shown to be described in terms of real SU(2) variables. \\ ( http://arxiv.org/abs/0909.4850 , 10kb) ------------------------------------------------------------------------------ \\ arXiv:0909.4857 Date: Sat, 26 Sep 2009 11:14:12 GMT (511kb) Title: Holographic Superconductor for a Lifshitz fixed point Authors: Sang-Jin Sin, Shan-Shan Xu, Yang Zhou Categories: hep-th Comments: 16 pages, 5 figures Report-no: USTC-ICTS-09-13 \\ We consider black hole duals of Lifshitz-fixed points at finite temperature, which was constructed in a recent work arXiv:0909.0263. We develop holographic techniques from equilibrium, to transport and to superconductivity. \\ ( http://arxiv.org/abs/0909.4857 , 511kb) ------------------------------------------------------------------------------ \\ arXiv:0909.4866 Date: Mon, 28 Sep 2009 12:19:51 GMT (330kb) Title: Decoupling and scaling solutions in Yang-Mills theory with the Gribov horizon Authors: Kei-Ichi Kondo (U. Tokyo/Chiba U.) Categories: hep-th Comments: 22 pages, 2 figures, Report-no: CHIBA-EP-178 \\ We propose a trick which enables one to incorporate the Gribov horizon into the Schwinger-Dyson equation in Landau and Coulomb gauge Yang-Mills theory, using the Gribov-Zwanziger framework with the horizon term. We find a family of solutions parameterized by one-parameter $w_R(0)$ which was overlooked so far by assuming to be zero implicitly. The family includes both the scaling and decoupling solutions, and specification of the parameter discriminates between them. In the Landau gauge we discuss a possible decoupling solution satisfying the Kugo-Ojima criterion for color confinement. \\ ( http://arxiv.org/abs/0909.4866 , 330kb) ------------------------------------------------------------------------------ \\ arXiv:0909.4873 Date: Sat, 26 Sep 2009 16:51:38 GMT (11kb) Title: Fun from none: deformed symmetries and Fock space Authors: Michele Arzano Categories: hep-th Comments: 7 pages, no figures. Invited talk at XXV Max Born Symposium, The Planck scale, Wroclaw (Poland), June 29 - July 3, 2009. To appear in the Proceedings \\ We give a pedagogical introduction to the basics of deformations of relativistic symmetries and the Hilbert spaces of free quantum fields built as their representations. We focus in particular on the example of a $\kappa$-deformed scalar quantum field for which the generators of spatial translations that label the field modes act according to a deformed Leibnitz rule. We explore the richer structure of the $\kappa$-Fock space and point out possible physical consequences of the deformation. \\ ( http://arxiv.org/abs/0909.4873 , 11kb) ------------------------------------------------------------------------------ \\ arXiv:0909.4886 Date: Sat, 26 Sep 2009 18:40:35 GMT (35kb) Title: Conformal Scalar Propagation on the Schwarzschild Black-Hole Geometry Authors: George Tsoupros Categories: hep-th Comments: 34 pages, 2 figures. Due to appear in "General Relativity and Gravitation" \\ The vacuum activity generated by the curvature of the Schwarzschild black-hole geometry close to the event horizon is studied for the case of a massless, conformal scalar field. The associated approximation to the unknown, exact propagator in the Hartle-Hawking vacuum state for small values of the radial coordinate above $ r = 2M$ results in an analytic expression which manifestly features its dependence on the background space-time geometry. This approximation to the Hartle-Hawking scalar propagator on the Schwarzschild black-hole geometry is, for that matter, distinct from all other. It is shown that the stated approximation is valid for physical distances which range from the event horizon to values which are orders of magnitude above the scale within which quantum and backreaction effects are comparatively pronounced. An expression is obtained for the renormalised $ <\phi^2(x)>$ in the Hartle-Hawking vacuum state which reproduces the established results on the event horizon and in that segment of the exterior geometry within which the approximation is valid. In contrast to previous results the stated expression has the superior feature of being entirely analytic. The effect of the manifold's causal structure to scalar propagation is also studied. \\ ( http://arxiv.org/abs/0909.4886 , 35kb) ------------------------------------------------------------------------------ \\ arXiv:0909.4901 Date: Mon, 28 Sep 2009 18:49:17 GMT (37kb) Title: Background field formalism for chiral matter and gauge fields conformally coupled to supergravity Authors: Daniel Butter Categories: hep-th Comments: 43 pages \\ We expand the generic model involving chiral matter, super Yang-Mills gauge fields, and supergravity to second order in the gravity and gauge prepotentials in a manifestly covariant and conformal way. Such a class of models includes conventional chiral matter coupled to supergravity via a conformal compensator. This is a first step toward calculating one-loop effects in supergravity in a way that does not require a perturbative expansion in the inverse Planck scale or a recourse to component level calculations to handle the coupling of the K\"ahler potential to the gravity sector. We also consider a more restrictive model involving a linear superfield in the role of the conformal compensator and investigate the similarities it has to the dual chiral model. \\ ( http://arxiv.org/abs/0909.4901 , 37kb) ------------------------------------------------------------------------------ \\ arXiv:0909.4947 Date: Sun, 27 Sep 2009 16:14:24 GMT (1222kb,D) Title: Extracting black hole physics from the lattice Authors: Simon Catterall and Toby Wiseman Categories: hep-th hep-lat Comments: 36 pages, 7 figures \\ We perform lattice simulations of N D0-branes at finite temperature in the decoupling limit, namely 16 supercharge SU(N) Yang-Mills quantum mechanics in the 't Hooft limit. At low temperature this theory is conjectured to be dual to certain supergravity black holes. We emphasize that the existence of a non-compact moduli space renders the partition function of the quantum mechanics theory divergent, and we perform one loop calculations that demonstrate this explicitly. In consequence we use a scalar mass term to regulate this divergence and argue that the dual black hole thermodynamics may be recovered in the appropriate large N limit as the regulator is removed. We report on simulations for N up to 5 including the Pfaffian phase, and N up to 12 in the phase quenched approximation. Interestingly, in the former case, where we may calculate this potentially difficult phase, we find that it appears to play little role dynamically over the temperature range tested, which is certainly encouraging for future simulations of this theory. \\ ( http://arxiv.org/abs/0909.4947 , 1222kb) ------------------------------------------------------------------------------ \\ arXiv:0909.5105 Date: Mon, 28 Sep 2009 15:03:19 GMT (89kb) Title: Finite-size effects on the chiral phase diagram of four-fermion models in four dimensions Authors: L.M. Abreu, A.P.C. Malbouisson, J.M.C. Malbouisson, A.E. Santana Categories: hep-th Comments: LATEX 14 pages 2 figures Journal-ref: Nucl. Phys. B, vol. 818, 127-138 (2009) \\ We study the size dependence of the dynamical symmetry breaking in the four-dimensional Nambu-Jona-Lasinio model. We show that the presence of boundaries reduces the chiral breaking region, and this effect is strengthened for a larger number of compactified dimensions. A critical value for the length of the compactified dimensions exists, below which the dynamical symmetry breaking is not possible. Considering finite temperature and chemical potential, the chiral phase structure for the system with compactified dimensions is obtained. A gradual decreasing of the chiral breaking region with increasing of chemical potential is found. Also, at fixed chemical potential, the decreasing of the size of the system changes the order of the chiral phase transition. \\ ( http://arxiv.org/abs/0909.5105 , 89kb) ------------------------------------------------------------------------------ \\ arXiv:0909.5167 Date: Mon, 28 Sep 2009 19:56:01 GMT (21kb) Title: Scalar field perturbations in Horava-Lifshitz cosmology Authors: Anzhong Wang, David Wands and Roy Maartens Categories: hep-th Comments: Revtex4, 12 papges, no figures \\ In this paper we study perturbations of a scalar field cosmology in Horava-Lifshitz gravity, adopting the Sotiriou-Visser-Weifurtner generalization, which is the most general setup without detailed balance but with the projectability condition. After obtaining the general field equations, including a sixth-order Klein-Gordon equation, we investigate scalar field perturbations coupled to gravity in a flat Friedmann-Robertson-Walker universe. In the sub-horizon regime, the metric and scalar field modes have independent oscillations with different frequencies and phases except in particular cases.On super-horizon scales the perturbations become adiabatic during slow-roll inflation driven by a single field and the comoving curvature perturbation is constant. \\ ( http://arxiv.org/abs/0909.5167 , 21kb) ------------------------------------------------------------------------------ \\ arXiv:0909.5171 Date: Mon, 28 Sep 2009 19:42:31 GMT (23kb) Title: Quark confinement as the spontaneous breaking of the closure properties for large dual transformations Authors: L. E. Oxman Categories: hep-th Comments: 34 pages, LaTeX \\ In this work, we include monopole and center vortex sectors in the Petrov-Diakonov representation of the Wilson loop average in SU(2) Yang-Mills theory. In this manner, we are able to discuss the minimal conditions that must be satisfied in order to render the ''Wilson surface'' in the associated Wess-Zumino term observable. This corresponds to the spontaneous breaking of the closure properties for large transformations of the dual fields, a confining phase that would be naturally driven by correlated monopoles and center vortices. \\ ( http://arxiv.org/abs/0909.5171 , 23kb) %-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%- ------------------------------------------------------------------------------ \\ arXiv:0807.4590 (*cross-listing*) Date: Tue, 29 Jul 2008 07:39:48 GMT (150kb) Date (revised v2): Wed, 5 Aug 2009 06:29:12 GMT (38kb) Title: Could Dark Matter Interactions be an Alternative to Dark Energy ? Authors: S. Basilakos, M. Plionis Categories: astro-ph gr-qc hep-ph hep-th Comments: 7 pages, 2 figures, Accepted for publication by Astronomy & Astrophysics, major revision \\ We study the global dynamics of the universe within the framework of the Interacting Dark Matter (IDM) scenario. Assuming that the dark matter obeys the collisional Boltzmann equation, we can derive analytical solutions of the global density evolution, which can accommodate an accelerated expansion, equivalent to either the {\em quintessence} or the standard $\Lambda$ models, with the present time located after the inflection point. This is possible if there is a disequilibrium between the DM particle creation and annihilation processes with the former process dominating, which creates an effective source term with negative pressure. Comparing the predicted Hubble expansion of one of the IDM models (the simplest) with observational data we find that the effective annihilation term is quite small, as suggested by a variety of other recent experiments. \\ ( http://arxiv.org/abs/0807.4590 , 38kb) ------------------------------------------------------------------------------ \\ arXiv:0908.3898 (*cross-listing*) Date: Wed, 26 Aug 2009 20:10:15 GMT (19kb,D) Date (revised v2): Fri, 25 Sep 2009 21:32:19 GMT (20kb,D) Title: Tachyacoustic Cosmology: An Alternative to Inflation Authors: Dennis Bessada (Univ. at Buffalo, SUNY / INPE Brazil), William H. Kinney (Univ. at Buffalo, SUNY), Dejan Stojkovic (Univ. at Buffalo, SUNY), John Wang (Niagara Univ.) Categories: astro-ph.CO gr-qc hep-th Comments: 11 pages, LaTeX (V2: references added. Version submitted to PRD) \\ We consider an alternative to inflation for the generation of superhorizon perturbations in the universe in which the speed of sound is faster than the speed of light. We label such cosmologies, first proposed by Armendariz-Picon, {\it tachyacoustic}, and explicitly construct examples of non-canonical Lagrangians which have superluminal sound speed, but which are causally self-consistent. Such models possess two horizons, a Hubble horizon and an acoustic horizon, which have independent dynamics. Even in a decelerating (non-inflationary) background, a nearly scale-invariant spectrum of perturbations can be generated by quantum perturbations redshifted outside of a shrinking acoustic horizon. The acoustic horizon can be large or even infinite at early times, solving the cosmological horizon problem without inflation. These models do not, however, dynamically solve the cosmological flatness problem, which must be imposed as a boundary condition. Gravitational wave modes, which are produced by quantum fluctuations exiting the Hubble horizon, are not produced. \\ ( http://arxiv.org/abs/0908.3898 , 20kb) ------------------------------------------------------------------------------ \\ arXiv:0909.4522 (*cross-listing*) Date: Thu, 24 Sep 2009 19:29:37 GMT (79kb) Date (revised v2): Thu, 24 Sep 2009 20:47:57 GMT (87kb) Date (revised v3): Sat, 26 Sep 2009 23:16:47 GMT (87kb) Title: Anomaly Poles as Common Signatures of Chiral and Conformal Anomalies Authors: Roberta Armillis, Claudio Coriano, Luigi Delle Rose Categories: hep-ph hep-th Comments: 13 pages, 4 figures \\ One feature of the chiral anomaly, analyzed in a perturbative framework, is the appearance of massless poles which account for it. They are identified by a spectral analysis of the anomaly graph and are usually interpreted as being of an infrared origin. Recent investigations show that their presence is not just confined in the infrared, but that they appear in the effective action under the most general kinematical conditions, even if they decouple in the infrared. Further studies reveal that they are responsible for the non-unitary behaviour of these theories in the ultraviolet (UV) region. We extend this analysis to the case of the conformal anomaly, showing that the effective action describing the interaction of gauge fields with gravity is characterized by anomaly poles that give the entire anomaly and are decoupled in the infrared (IR), in complete analogy with the chiral case. This complements a related analysis by Giannotti and Mottola on the trace anomaly in gravity, in which an anomaly pole has been identified in the corresponding correlator using dispersion theory in the IR. Our extension is based on an exact computation of the off-shell correlation function involving an energy-momentum tensor and two vector currents (the gauge-gauge-graviton vertex) which is responsible for the appearance of the anomaly. \\ ( http://arxiv.org/abs/0909.4522 , 87kb) ------------------------------------------------------------------------------ \\ arXiv:0909.4535 (*cross-listing*) Date: Thu, 24 Sep 2009 20:00:08 GMT (63kb) Title: Non-Gaussianity from resonant curvaton decay Authors: Alex Chambers, Sami Nurmi, Arttu Rajantie Categories: astro-ph.CO hep-ph hep-th Comments: 25 pages; 4 figures; 2 tables Report-no: Imperial/TP/09/AC/01 \\ We calculate curvature perturbations in the scenario in which the curvaton field decays into another scalar field via parametric resonance. As a result of a nonlinear stage at the end of the resonance, standard perturbative calculation techniques fail in this case. Instead, we use lattice field theory simulations and the separate universe approximation to calculate the curvature perturbation as a nonlinear function of the curvaton field. For the parameters tested, the generated perturbations are highly non-Gaussian and not well approximated by the usual fNL parameterisation. Resonant decay plays an important role in the curvaton scenario and can have a substantial effect on the resulting perturbations. \\ ( http://arxiv.org/abs/0909.4535 , 63kb) ------------------------------------------------------------------------------ \\ arXiv:0909.4538 (*cross-listing*) Date: Thu, 24 Sep 2009 20:00:21 GMT (317kb) Title: Self-Accelerating Universe in Galileon Cosmology Authors: Fabio P Silva and Kazuya Koyama Categories: astro-ph.CO gr-qc hep-ph hep-th Comments: 4 pages, 4 figures \\ We present a cosmological model with a solution that self-accelerates at late-times without signs of ghost instabilities on small scales. The model is a natural extension of the Brans-Dicke (BD) theory including a non-linear derivative interaction, which appears in a theory with the Galilean shift symmetry. The existence of the self-accelerating universe requires a negative BD parameter but, thanks to the non-linear term, small fluctuations around the solution are stable on small scales. General relativity is recovered at early times and on small scales by this non-linear interaction via the Vainshtein mechanism. At late time, gravity is strongly modified and the background cosmology shows a phantom-like behaviour and the growth rate of structure formation is enhanced. Thus this model leaves distinct signatures in cosmological observations and it can be distinguished from standard $\Lambda$CDM cosmology. \\ ( http://arxiv.org/abs/0909.4538 , 317kb) ------------------------------------------------------------------------------ \\ arXiv:0909.4668 (*cross-listing*) Date: Fri, 25 Sep 2009 11:28:53 GMT (1135kb) Title: Semiclassical environment of collapsing shells Authors: Kinjal Banerjee, Aseem Paranjape Categories: gr-qc astro-ph.CO hep-th Comments: 14 pages, 15 figures, revtex4 \\ We explore in detail the semiclassical environment of collapsing shells of matter, and determine the semiclassical flux measured by a variety of observers. This study is a preliminary step in a broader investigation of thermodynamic properties of the geometry of collapsing objects. Specifically, in this paper we consider spherically symmetric null and timelike collapsing shells which form an event horizon, and calculate the flux measured by observers both inside and outside the shell, and both inside and outside the event horizon, and find nontrivial results in most of the cases. Additionally, we also investigate the environment of a shell which collapses but \emph{does not} form a horizon, halting at some radius larger than the Schwarzschild radius, and find that such an object generically gives rise to a pulse of radiation which is sharply peaked as it travels inwards and is reflected at the origin, and eventually emerges from the shell in a ``thermalized'' form. Our results have potential consequences in addressing questions pertaining, e.g. to black hole entropy and backreaction. \\ ( http://arxiv.org/abs/0909.4668 , 1135kb) ------------------------------------------------------------------------------ \\ arXiv:0909.4699 (*cross-listing*) Date: Fri, 25 Sep 2009 13:29:15 GMT (68kb) Title: Circular dichroism, magnetic knots and the spectropolarimetry of the Cosmic Microwave Background Authors: Massimo Giovannini Categories: astro-ph.CO gr-qc hep-ph hep-th Comments: 40 pages, 5 figures Report-no: CERN-PH-TH/2009-174 \\ When the last electron-photon scattering takes place in a magnetized environment, the degree of circular polarization of the outgoing radiation depends upon the magnetic field strength. After deriving the scattering matrix of the process, the generalized radiative transfer equations are deduced in the presence of the relativistic fluctuations of the geometry and for all the four brightness perturbations. The new system of equations is solved under the assumption that the incident radiation is not polarized. The induced V-mode polarization is analyzed both analytically and numerically. The corresponding angular power spectra are calculated and compared with the measured (or purported) values of the linear polarizations (i.e. E-mode and B-mode) as they arise in the concordance model and in its neighboring extensions. Possible connections between the V-mode polarization of the Cosmic Microwave background and the topological properties of the magnetic flux lines prior to equality are outlined and briefly explored in analogy with the physics of magnetized sun spots. \\ ( http://arxiv.org/abs/0909.4699 , 68kb) ------------------------------------------------------------------------------ \\ arXiv:0909.4706 (*cross-listing*) Date: Fri, 25 Sep 2009 14:10:55 GMT (7kb) Title: Dominant energy condition and causality for Skyrme-like generalizations of the wave-map equation Authors: Willie Wai-Yeung Wong Categories: math-ph hep-th math.MP Comments: 6 pages MSC-class: 53Z05 \\ It is shown in this note that a class of Lagrangian field theories closely related to the wave-map equation and the Skyrme model obeys the dominant energy condition, and hence by Hawking's theorem satisfies finite speed of propagation. The subject matter is a generalization of a recent result of Gibbons. \\ ( http://arxiv.org/abs/0909.4706 , 7kb) %%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%% ------------------------------------------------------------------------------ \\ arXiv:0903.1428 (*cross-listing*) replaced with revised version Sun, 27 Sep 2009 13:55:36 GMT (7kb) Title: On singular Lagrangian underlying the Schr\"odinger equation Authors: A. A. Deriglazov Categories: math-ph hep-th math.MP quant-ph Comments: 04 pages, published version Journal-ref: Phys. Lett. A 373 (2009) 3920-3923 \\ ( http://arxiv.org/abs/0903.1428 , 7kb) ------------------------------------------------------------------------------ \\ arXiv:0903.5348 replaced with revised version Mon, 28 Sep 2009 17:26:32 GMT (591kb) Title: On the Structure of Supersymmetric Sums in Multi-Loop Unitarity Cuts Authors: Z. Bern, J. J. M. Carrasco, H. Ita, H. Johansson, and R. Roiban Categories: hep-th Comments: Minor typographical errors corrected Report-no: UCLA/09/TEP/41 \\ ( http://arxiv.org/abs/0903.5348 , 591kb) ------------------------------------------------------------------------------ \\ arXiv:0904.0045 (*cross-listing*) replaced with revised version Sun, 27 Sep 2009 14:19:38 GMT (263kb) Title: Holographic Ricci dark energy in Randall-Sundrum braneworld: Avoidance of big rip and steady state future Authors: Chao-Jun Feng, Xin Zhang Categories: gr-qc astro-ph.CO hep-ph hep-th Comments: 6 pages, 4 figures; v2: discussions added, accepted for publication in Phys. Lett. B; v3: published version \\ ( http://arxiv.org/abs/0904.0045 , 263kb) ------------------------------------------------------------------------------ \\ arXiv:0904.0531 (*cross-listing*) replaced with revised version Sat, 26 Sep 2009 17:20:22 GMT (40kb) Title: Non-relativistic conformal symmetries and Newton-Cartan structures Authors: Christian Duval (CPT), P\'eter A. Horvathy (LMPT) Categories: math-ph gr-qc hep-th math.MP Comments: LaTeX, 47 pages. Bibliographical improvements. To appear in J. Phys. A \\ ( http://arxiv.org/abs/0904.0531 , 40kb) ------------------------------------------------------------------------------ \\ arXiv:0904.0588 replaced with revised version Mon, 28 Sep 2009 05:08:52 GMT (18kb) Title: NR $CFT_3$ duals in M-theory Authors: Eoin \'O Colg\'ain and Hossein Yavartanoo Categories: hep-th Comments: 18 pages, Minor corrections and added references Journal-ref: JHEP 0909:002,2009 DOI: 10.1088/1126-6708/2009/09/002 \\ ( http://arxiv.org/abs/0904.0588 , 18kb) ------------------------------------------------------------------------------ \\ arXiv:0904.0829 replaced with revised version Mon, 28 Sep 2009 10:07:45 GMT (21kb) Title: Cosmology of the Lifshitz universe Authors: Gianluca Calcagni Categories: hep-th astro-ph.CO gr-qc Comments: 23 pages. v2: one reference and one equation added, main conclusions unchanged; v3: matches published version, discussion improved, typos corrected Report-no: IGC-09/4-2 Journal-ref: JHEP09(2009)112 DOI: 10.1088/1126-6708/2009/09/112 \\ ( http://arxiv.org/abs/0904.0829 , 21kb) ------------------------------------------------------------------------------ \\ arXiv:0904.2266 (*cross-listing*) replaced with revised version Mon, 28 Sep 2009 12:34:05 GMT (19kb) Title: Nonlinear iteration solution for the full gluon propagator as a function of the mass gap Authors: V. Gogokhia Categories: hep-ph hep-th Comments: 16 pages, no figures, no tables, a few new references are added DOI: 10.1007/s10773-009-1051-6 \\ ( http://arxiv.org/abs/0904.2266 , 19kb) ------------------------------------------------------------------------------ \\ arXiv:0904.2287 replaced with revised version Mon, 28 Sep 2009 10:43:21 GMT (29kb) Title: QFT as pilot-wave theory of particle creation and destruction Authors: H. Nikolic Categories: hep-th quant-ph Comments: 29 pages, 2 figures, version accepted for publication in Int. J. Mod. Phys. A \\ ( http://arxiv.org/abs/0904.2287 , 29kb) ------------------------------------------------------------------------------ \\ arXiv:0904.2879 replaced with revised version Mon, 28 Sep 2009 04:44:57 GMT (509kb) Title: Positronium-like states from supergravity Authors: Eoin \'O Colg\'ain and Hossein Yavartanoo Categories: hep-th Comments: 12 pages, 6 figures, Minor corrections and added references Journal-ref: Nucl.Phys.B822:219-229,2009 DOI: 10.1016/j.nuclphysb.2009.07.014 \\ ( http://arxiv.org/abs/0904.2879 , 509kb) ------------------------------------------------------------------------------ \\ arXiv:0904.3445 replaced with revised version Sat, 26 Sep 2009 07:56:23 GMT (833kb) Title: A primer on problems and prospects of dark energy Authors: M. Sami Categories: hep-th astro-ph.HE gr-qc hep-ph Comments: 23 pages and 10 figures,invited review for Curr. Sci, final version Journal-ref: Curr. Sci. 97,887(2009) \\ ( http://arxiv.org/abs/0904.3445 , 833kb) ------------------------------------------------------------------------------ \\ arXiv:0904.4112 replaced with revised version Mon, 28 Sep 2009 15:24:38 GMT (27kb) Title: The open string pair-production rate enhancement by a magnetic flux Authors: J. X. Lu and Shan-Shan Xu Categories: hep-th Comments: 33 pages, no figures, a few points refined to the published version JHEP09(2009)093 Report-no: USTC-ICTS-09-05 Journal-ref: JHEP09(2009)093 \\ ( http://arxiv.org/abs/0904.4112 , 27kb) ------------------------------------------------------------------------------ \\ arXiv:0905.2759 (*cross-listing*) replaced with revised version Sat, 26 Sep 2009 03:04:56 GMT (8kb) Title: Multi-operator brackets acting thrice Authors: Thomas Curtright, Xiang Jin, and Luca Mezincescu Categories: math-ph hep-th math.CO math.MP Comments: Added references and detailed proof of main result, conforming to journal version Report-no: UMTG - 10 \\ ( http://arxiv.org/abs/0905.2759 , 8kb) ------------------------------------------------------------------------------ \\ arXiv:0905.3770 replaced with revised version Sun, 27 Sep 2009 14:29:49 GMT (38kb) Title: Biharmonic Superspace for N=4 Mechanics Authors: E. Ivanov, J. Niederle Categories: hep-th Comments: 1 + 37 pages, typos corrected, references updated; version published in PRD Journal-ref: Phys.Rev.D80:065027,2009 DOI: 10.1103/Phys.RevD.80.065027 \\ ( http://arxiv.org/abs/0905.3770 , 38kb) ------------------------------------------------------------------------------ \\ arXiv:0907.3249 replaced with revised version Sat, 26 Sep 2009 07:58:03 GMT (375kb) Title: Infrared behavior of the ghost propagator in the Landau gauge Yang-Mills theory Authors: Kei-Ichi Kondo Categories: hep-th hep-lat hep-ph Comments: 22 pages, 2 figures, minor changes: typo corrected. Appendix A, B added. Sect. 4.1 rewritten. References added Report-no: CHIBA-EP-177 \\ ( http://arxiv.org/abs/0907.3249 , 375kb) ------------------------------------------------------------------------------ \\ arXiv:0907.3408 (*cross-listing*) replaced with revised version Mon, 28 Sep 2009 09:49:40 GMT (11kb) Title: New reflection matrices for the U_q(gl(m|n)) case Authors: Anastasia Doikou, Nikos Karaiskos Categories: math-ph hep-th math.MP nlin.SI Comments: 13 pages, Latex. Minor modifications Journal-ref: J. Stat. Mech. (2009) L09004 \\ ( http://arxiv.org/abs/0907.3408 , 11kb) ------------------------------------------------------------------------------ \\ arXiv:0907.4229 replaced with revised version Mon, 28 Sep 2009 13:55:20 GMT (83kb) Title: Phase Diagram and Fixed-Point Structure of two dimensional N=1 Wess-Zumino Models Authors: Franziska Synatschke, Holger Gies and Andreas Wipf Categories: hep-th cond-mat.str-el hep-ph Comments: 22 pages, 10 figures, typos corrected, to be published in Phys. Rev. D \\ ( http://arxiv.org/abs/0907.4229 , 83kb) ------------------------------------------------------------------------------ \\ arXiv:0907.4887 replaced with revised version Sat, 26 Sep 2009 09:24:07 GMT (22kb) Title: Possible solution of the cosmological constant problem Authors: F.R. Klinkhamer, G.E. Volovik Categories: hep-th Comments: 10 pages; v3: minor changes and reference added Report-no: KA-TP-10-2009 \\ ( http://arxiv.org/abs/0907.4887 , 22kb) ------------------------------------------------------------------------------ \\ arXiv:0907.5011 replaced with revised version Mon, 28 Sep 2009 18:29:17 GMT (178kb) Title: Gravitational quasinormal modes of AdS black branes in d spacetime dimensions Authors: Jaqueline Morgan, Vitor Cardoso, Alex S. Miranda, C. Molina, Vilson T. Zanchin Categories: hep-th Comments: added references, typos corrected, minor changes, final version for JHEP Journal-ref: JHEP09(2009)117 DOI: 10.1088/1126-6708/2009/09/117 \\ ( http://arxiv.org/abs/0907.5011 , 178kb) ------------------------------------------------------------------------------ \\ arXiv:0908.1049 replaced with revised version Mon, 28 Sep 2009 12:00:53 GMT (16kb) Title: DBI analysis of generalised permutation branes Authors: Stefan Fredenhagen, Cosimo Restuccia Categories: hep-th Comments: 19 pages, computation in section 3.5.1 corrected, conclusions unchanged \\ ( http://arxiv.org/abs/0908.1049 , 16kb) ------------------------------------------------------------------------------ \\ arXiv:0908.1964 replaced with revised version Sat, 26 Sep 2009 14:13:31 GMT (18kb) Title: Effective Field Theory, Past and Future Authors: Steven Weinberg Categories: hep-th gr-qc hep-ph physics.hist-ph Comments: Correction to footnote 29 and associated text. 21 pages Report-no: UTTG-09-09 \\ ( http://arxiv.org/abs/0908.1964 , 18kb) ------------------------------------------------------------------------------ \\ arXiv:0908.2246 replaced with revised version Sun, 27 Sep 2009 18:59:54 GMT (11kb) Title: A note on strings in deformed AdS_4 x CP3: giant magnon and single spike solutions Authors: M. Schimpf and R.C. Rashkov Categories: hep-th Comments: 11 pages, no figures, writings improved, references added Report-no: TUW-09-09 \\ ( http://arxiv.org/abs/0908.2246 , 11kb) ------------------------------------------------------------------------------ \\ arXiv:0908.2437 replaced with revised version Mon, 28 Sep 2009 14:19:07 GMT (102kb) Title: Symmetries of the N=4 SYM S-matrix Authors: Amit Sever, Pedro Vieira Categories: hep-th Comments: 32 pages, 11 figures. v2: Typos corrected, references added, vanishing contribution appearing in the passage from interacting S-matrix to the full S-matrix eliminated \\ ( http://arxiv.org/abs/0908.2437 , 102kb) ------------------------------------------------------------------------------ \\ arXiv:0908.3624 replaced with revised version Sat, 26 Sep 2009 04:12:15 GMT (41kb) Title: Minimal unitary representation of SU(2,2) and its deformations as massless conformal fields and their supersymmetric extensions Authors: Sudarshan Fernando and Murat Gunaydin Categories: hep-th Comments: Revised with an extended introduction and additional references. Typos corrected. 49 pages; Latex file \\ ( http://arxiv.org/abs/0908.3624 , 41kb) ------------------------------------------------------------------------------ \\ arXiv:0909.0024 (*cross-listing*) replaced with revised version Sun, 27 Sep 2009 18:42:05 GMT (28kb) Title: Unparticle dark energy Authors: De-Chang Dai, Sourish Dutta, Dejan Stojkovic Categories: astro-ph.CO gr-qc hep-ph hep-th Comments: v1: 7 pages, 8 figures, version accepted by Phys.Rev.D V2: refs added, matches PRD version Journal-ref: Phys. Rev. D 80, 063522 (2009) \\ ( http://arxiv.org/abs/0909.0024 , 28kb) ------------------------------------------------------------------------------ \\ arXiv:0909.0980 replaced with revised version Mon, 28 Sep 2009 15:20:27 GMT (15kb) Title: The D0$-$D8 system revisited Authors: J. X. Lu and Rong-Jun Wu Categories: hep-th Comments: 16 pages, no figures, references updated Report-no: USTC-ICTS-09-12 \\ ( http://arxiv.org/abs/0909.0980 , 15kb) ------------------------------------------------------------------------------ \\ arXiv:0909.1203 replaced with revised version Mon, 28 Sep 2009 05:52:03 GMT (316kb) Title: Affine Extension of Galilean Conformal Algebra in 2+1 Dimensions Authors: Ali Hosseiny and Shahin Rouhani Categories: hep-th Comments: 13 pages, no figures. Some references added, typos corrected, minor changes in content \\ ( http://arxiv.org/abs/0909.1203 , 316kb) ------------------------------------------------------------------------------ \\ arXiv:0909.1458 (*cross-listing*) replaced with revised version Mon, 28 Sep 2009 10:07:31 GMT (17kb) Title: Poincare polynomial of moduli spaces of framed sheaves on (stacky) Hirzebruch surfaces Authors: Ugo Bruzzo, Rubik Poghossian, Alessandro Tanzini Categories: math.AG hep-th math-ph math.MP Comments: 17 pages. This submission supersedes arXiv:0809.0155 [math.AG] Report-no: SISSA Preprint 56/2009/fm MSC-class: 14D20; 14D21;14J60; 81T30; 81T45 \\ ( http://arxiv.org/abs/0909.1458 , 17kb) ------------------------------------------------------------------------------ \\ arXiv:0909.2424 (*cross-listing*) replaced with revised version Sat, 26 Sep 2009 04:16:11 GMT (1175kb) Title: Evolution profiles and functional equations Authors: Thomas Curtright and Cosmas Zachos Categories: math-ph hep-th math.MP nlin.SI Comments: 17 pages, 12 figures. Addendum on polynomial potentials Report-no: ANL-HEP-PR-09-80 and UMTG-11 \\ ( http://arxiv.org/abs/0909.2424 , 1175kb) ------------------------------------------------------------------------------ \\ arXiv:0909.3380 (*cross-listing*) replaced with revised version Sat, 26 Sep 2009 19:28:27 GMT (35kb) Title: Harmonics on the factored three-sphere and the Hopf map Authors: J.S.Dowker Categories: gr-qc astro-ph.CO hep-th math-ph math.MP Comments: 21 pages. Physical motivation added. Analytical improvements. Extension to icosahedral tensors with relevant reference \\ ( http://arxiv.org/abs/0909.3380 , 35kb) ------------------------------------------------------------------------------ \\ arXiv:0909.4189 replaced with revised version Mon, 28 Sep 2009 13:40:09 GMT (36kb) Title: The Phase Diagram for Wess-Zumino Models Authors: Franziska Synatschke, Holger Gies and Andreas Wipf Categories: hep-th hep-ph Comments: 4 pages, 4 figures, talk given at SUSY09, Boston, MA, 5-10 June 2009, to appear in the proceedings \\ ( http://arxiv.org/abs/0909.4189 , 36kb) %%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%--- For subscribe options to combined physics archives, e-mail To: physics@arXiv.org, Subject: subscribe ----------------------------------------------------------------------------- For help on viewing and making submissions, see http://arXiv.org/help/ For a list of archive mirror sites, see http://arXiv.org/servers.html ----------------------------------------------------------------------------- Third-party submissions cause excessive problems. 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