Date: Wed, 30 Oct 13 00:18:41 GMT Subject: hep-lat daily 7 new + crosses received by eprepget ------------------------------------------------------------------------------ ------------------------------------------------------------------------------ Send any comments regarding submissions directly to submitter. ------------------------------------------------------------------------------ Archives at http://arxiv.org/ To unsubscribe, e-mail To: hep-lat@arXiv.org, Subject: cancel ------------------------------------------------------------------------------ received by eprepget from Mon 28 Oct 13 20:00:00 GMT to Tue 29 Oct 13 20:00:00 GMT ------------------------------------------------------------------------------ \\ arXiv:1310.7745 Date: Tue, 29 Oct 2013 10:37:55 GMT (86kb) Title: $G_2$-QCD: Spectroscopy and the phase diagram at zero temperature and finite density Authors: Lorenz von Smekal, Bjoern H. Wellegehausen, Axel Maas and Andreas Wipf Categories: hep-lat Comments: 7 pages, 9 figures, presented at the 31st International Symposium on Lattice Field Theory (Lattice 2013), 29 July - 3 August 2013, Mainz, Germany \\ Due to the fermion sign problem, standard lattice Monte-Carlo method for QCD fail at small temperatures and high baryon densities. $G_2$-QCD, QCD with the gauge group $SU(3)$ replaced by the exceptional Lie group $G_2$, can be simulated using lattice techniques at these densities, and can therefore provide an illustration of the possible phase structure. Here we present a systematic investigation of the ground-state hadronic spectrum using lattice simulations for different quark masses in several hadronic sectors. We then show that the different hadronic scales of Goldstone bosons, intermediate bosons, and baryons is reflected in the phase structure at finite density. \\ ( http://arxiv.org/abs/1310.7745 , 86kb) ------------------------------------------------------------------------------ \\ arXiv:1310.7778 Date: Tue, 29 Oct 2013 12:20:12 GMT (105kb) Title: The colour adjoint static potential from Wilson loops with generator insertions and its physical interpretation Authors: Marc Wagner, Owe Philipsen Categories: hep-lat hep-ph Comments: 7 pages, 2 figures, talk given at the 31st International Symposium on Lattice Field Theory (Lattice 2013), July 29-August 3 2013, Mainz, Germany \\ We discuss the non-perturbative computation and interpretation of a colour adjoint static potential based on Wilson loops with generator insertions. Numerical lattice results for SU(2) gauge theory are presented and compared to corresponding perturbative results. \\ ( http://arxiv.org/abs/1310.7778 , 105kb) ------------------------------------------------------------------------------ \\ arXiv:1310.7818 Date: Tue, 29 Oct 2013 14:40:22 GMT (90kb,D) Title: Thermal field theories and shifted boundary conditions Authors: Leonardo Giusti and Harvey B. Meyer Categories: hep-lat Comments: 7 pages, 1 figure, talk presented at the 31st International Symposium on Lattice Field Theory - Lattice 2013, Mainz, Germany Journal-ref: PoS (LATTICE 2013) 214 \\ The analytic continuation to an imaginary velocity of the canonical partition function of a thermal system expressed in a moving frame has a natural implementation in the Euclidean path-integral formulation in terms of shifted boundary conditions. The Poincare' invariance underlying a relativistic theory implies a dependence of the free-energy on the compact length L_0 and the shift xi only through the combination beta=L_0(1+xi^2)^(1/2). This in turn implies that the energy and the momentum distributions of the thermal theory are related, a fact which is encoded in a set of Ward identities among the correlators of the energy-momentum tensor. The latter have interesting applications in lattice field theory: they offer novel ways to compute thermodynamic potentials, and a set of identities to renormalize non-perturbatively the energy-momentum tensor. At fixed bare parameters the shifted boundary conditions also provide a simple method to vary the temperature in much smaller steps than with the standard procedure. \\ ( http://arxiv.org/abs/1310.7818 , 90kb) ------------------------------------------------------------------------------ \\ arXiv:1310.7832 Date: Tue, 29 Oct 2013 15:21:13 GMT (155kb) Title: Exploring Higgs Sector Spectroscopy Authors: Axel Maas, Tajdar Mufti Categories: hep-lat hep-ph Comments: 7 pages, 4 figures, talk given at the "XXXI International Symposium on Lattice Field Theory", Mainz, July/August 2013. Submitted to the proceedings \\ The Higgs sector of the standard model is field-theoretically a very interesting theory. Because strong and weak coupling domains are continuously connected, only quantitative changes distinguish the various regions. Especially, this is true for the asymptotic spectrum, which can only consist out of gauge-invariant composite, i. e. bound, states. Since in some regions of parameter space even Regge trajectories are expected to exist, there is immediately the possibility that resonances may also be present in the parameter region characteristic of the standard model Higgs sector. This possibility is discussed in some detail, starting from the definition of the theory to spectroscopy, including excited state analysis, to some considerations whether this could have experimental consequences. The strongest limitation for this exploration turns out to be that the gauge coupling without fermions runs much faster, and the gauge sector is therefore potentially affected. \\ ( http://arxiv.org/abs/1310.7832 , 155kb) ------------------------------------------------------------------------------ \\ arXiv:1310.7875 Date: Tue, 29 Oct 2013 16:54:44 GMT (76kb) Title: Partially twisted boundary conditions for scalar mesons Authors: Dimitri Agadjanov (Bonn U., HISKP & SANGU), Ulf-G. Mei{\ss}ner (Bonn U., HISKP & Juelich Forschungszentrum), Akaki Rusetsky (Bonn U., HISKP) Categories: hep-lat Comments: Presented at the 31st International Symposium on Lattice Field Theory (Lattice 2013), 29 July - 3 August 2013, Mainz, Germany \\ The possibility of imposing partially twisted boundary conditions in the lattice study of the resonance states is investigated by using the effective field theory (EFT) methods. In particular, it is demonstrated that - in certain cases - it is possible to use partial twisting even in the presence of the quark annihilation diagrams. \\ ( http://arxiv.org/abs/1310.7875 , 76kb) ------------------------------------------------------------------------------ \\ arXiv:1310.7876 Date: Tue, 29 Oct 2013 16:57:09 GMT (44kb) Title: Magnetic catalysis (and inverse catalysis) at finite temperature in two-color lattice QCD Authors: E.-M. Ilgenfritz, M. Muller-Preussker, B. Petersson, A. Schreiber Categories: hep-lat Comments: 10 pages, 6 figures Report-no: HU-EP-13/57 \\ Two-color lattice QCD with N_f=4 staggered fermion degrees of freedom (no rooting trick is applied) with equal electric charge q is studied in a homogeneous magnetic background field B and at non-zero temperature T. In order to circumvent renormalization as a function of the bare coupling we apply a fixed-scale approach. We study the influence of the magnetic field on the critical temperature. At rather small pseudo-scalar meson mass (m_pi \approx 175 MeV \approx T_c(B=0)) we confirm magnetic catalysis for sufficiently strong magnetic field strength, while at T=195 MeV and weak magnetic field (qB {\lesssim} 0.8 GeV^2) we find a rise of the Polyakov loop with qB and thus, indications for an inverse magnetic catalysis. \\ ( http://arxiv.org/abs/1310.7876 , 44kb) ------------------------------------------------------------------------------ \\ arXiv:1310.7887 Date: Tue, 29 Oct 2013 17:22:19 GMT (170kb,D) Title: Spectrum of excited states using the stochastic LapH method Authors: John Bulava, Brendan Fahy, Justin Foley, You-Cyuan Jhang, Keisuke J. Juge, David Lenkner, Colin Morningstar, and Chik Him Wong Categories: hep-lat Comments: 14 pages, 7 figures, talk and poster presented at the 31st International Symposium on Lattice Field Theory (Lattice 2013), 29 July - 3 August 2013, Mainz, Germany \\ Progress in computing the spectrum of excited baryons and mesons in lattice QCD is described. Our first results in the zero-momentum bosonic I=1, S=0, T1u+ symmetry sector of QCD using a correlation matrix of 56 operators are presented. In addition to a dozen spatially-extended meson operators, 44 two-meson operators are used, involving a wide variety of light isovector, isoscalar, and strange meson operators of varying relative momenta. All needed Wick contractions are efficiently evaluated using a stochastic method of treating the low-lying modes of quark propagation that exploits Laplacian Heaviside quark-field smearing. Level identification is discussed. \\ ( http://arxiv.org/abs/1310.7887 , 170kb) %-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%- %%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%% ------------------------------------------------------------------------------ \\ arXiv:1112.4975 replaced with revised version Tue, 29 Oct 2013 15:42:51 GMT (130kb) Title: Gluon Propagators in 3D SU(2) Theory and Effects of Gribov Copies Authors: V. G. Bornyakov, V. K. Mitrjushkin, R. N. Rogalyov Categories: hep-lat Comments: 7 pages, 5 figures; journal version Report-no: ITEP-LAT/2011-14 DOI: 10.1103/PhysRevD.86.114503 \\ ( http://arxiv.org/abs/1112.4975 , 130kb) ------------------------------------------------------------------------------ \\ arXiv:1307.4619 (*cross-listing*) replaced with revised version Tue, 29 Oct 2013 09:37:53 GMT (2495kb) Title: Real-time dynamics of string breaking Authors: Florian Hebenstreit, J\"urgen Berges, Daniil Gelfand Categories: hep-ph hep-lat quant-ph Comments: 5 pages, 4 figures. Revised version: Discussion extended and one figure added, PRL Version \\ ( http://arxiv.org/abs/1307.4619 , 2495kb) ------------------------------------------------------------------------------ \\ arXiv:1307.8098 (*cross-listing*) replaced with revised version Tue, 29 Oct 2013 14:11:40 GMT (3691kb,D) Title: Equation of State of hot and dense QCD: Resummed perturbation theory confronts lattice data Authors: Sylvain Mogliacci, Jens O. Andersen, Michael Strickland, Nan Su and Aleksi Vuorinen Categories: hep-ph hep-lat nucl-th Comments: 43 pages, 10 figures. v2: Figures and discussion updated with recent three-loop HTLpt results Report-no: BI-TP 2013/17 \\ ( http://arxiv.org/abs/1307.8098 , 3691kb) ------------------------------------------------------------------------------ \\ arXiv:1310.5049 replaced with revised version Tue, 29 Oct 2013 04:38:49 GMT (5761kb,D) Title: Global Structure of Conformal Theories in the SU(3) Gauge Theory Authors: K.-I. Ishikawa, Y. Iwasaki, Yu Nakayama and T. Yoshie Categories: hep-lat hep-ph hep-th Comments: 46 pages, 47 figures and 7tables; typos corrected \\ ( http://arxiv.org/abs/1310.5049 , 5761kb) ------------------------------------------------------------------------------ \\ arXiv:1310.5238 replaced with revised version Tue, 29 Oct 2013 14:37:18 GMT (487kb,D) Title: 'Bs --> Ds l nu' near zero recoil in and beyond the Standard Model Authors: Mariam Atoui, Damir Becirevic, Vincent Morenas, Francesco Sanfilippo Categories: hep-lat hep-ex hep-ph Comments: 16 pages (6 tables, 6 plots) Report-no: LPT 13-74 \\ ( http://arxiv.org/abs/1310.5238 , 487kb) ------------------------------------------------------------------------------ \\ arXiv:1310.6394 replaced with revised version Tue, 29 Oct 2013 17:09:43 GMT (70kb) Title: The Integrable Bootstrap Program at Large N and its Applications in Gauge Theory Authors: Axel Cortes Cubero Categories: hep-lat cond-mat.str-el hep-th nlin.SI Comments: Presented at the 31st International Symposium on Lattice Field Theory (Lattice 2013), 29 July - 3 August 2013, Mainz, Germany. Some references added in the updated version \\ ( http://arxiv.org/abs/1310.6394 , 70kb) %%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%--- 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. Author self-submissions are exceedingly preferred. E-mail submissions have been discontinued in favor of better support for Web submissions. See http://arXiv.org/help/uploads