Date: Thu, 28 Aug 14 00:15:51 GMT Subject: nucl-th daily 4 new + 5 crosses received by eprepget ------------------------------------------------------------------------------ ------------------------------------------------------------------------------ Send any comments regarding submissions directly to submitter. ------------------------------------------------------------------------------ Archives at http://arxiv.org/ To unsubscribe, e-mail To: nucl-th@arXiv.org, Subject: cancel ------------------------------------------------------------------------------ received by eprepget from Tue 26 Aug 14 20:00:00 GMT to Wed 27 Aug 14 20:00:00 GMT ------------------------------------------------------------------------------ \\ arXiv:1408.6230 Date: Tue, 26 Aug 2014 15:00:25 GMT (1293kb) Title: EOSDB: The Database for Nuclear EoS Authors: Chikako Ishizuka, Takuma Suda, Hideyuki Suzuki, Akira Ohnishi, Kohsuke Sumiyoshi, Hiroshi Toki Categories: nucl-th astro-ph.HE Comments: 29 pages, 5 figures, submitted to Publications of the Astronomical Society of Japan \\ Nuclear equation of state (EoS) plays an important role in understanding the formation of compact objects such as neutron stars and black holes. The true nature of the EoS has been a matter of debate at any density range not only in the nuclear physics but also in the astronomy and astrophysics. We have constructed a database of EoSs by compiling data from the literature. Our database contains the basic properties of the nuclear EoS of symmetric nuclear matter and of pure neutron matter. It also includes the detailed information about the theoretical models, for example the adopted methods and assumptions in individual models. The novelty of the database is to consider new experimental probes such as the symmetry energy, its slope relative to the baryon density, and the incompressibility, which enables the users to check their model dependences. We demonstrate the performance of the EOSDB through the examinations of the model dependence among different nuclear EoSs. It is reveled that some theoretical EoSs, which is commonly used in astrophysics, do not satisfactorily agree with the experimental constraints. \\ ( http://arxiv.org/abs/1408.6230 , 1293kb) ------------------------------------------------------------------------------ \\ arXiv:1408.6281 Date: Tue, 26 Aug 2014 23:14:52 GMT (99kb,D) Title: Nuclear pairing from microscopic forces: singlet channels and higher-partial waves Authors: S. Maurizio, J. W. Holt and P. Finelli Categories: nucl-th astro-ph.HE Comments: 18 pages and 9 figures \\ Background: An accurate description of nuclear pairing gaps is extremely important for understanding static and dynamic properties of the inner crusts of neutron stars and to explain their cooling process. Purpose: We plan to study the behavior of the pairing gaps $\Delta_F$ as a function of the Fermi momentum $k_F$ for neutron and nuclear matter in all relevant angular momentum channels where superfluidity is believed to naturally emerge. The calculations will employ realistic chiral nucleon-nucleon potentials with the inclusion of three-body forces and self-energy effects. Methods: The superfluid states of neutron and nuclear matter are studied by solving the BCS gap equation for chiral nuclear potentials using the method suggested by Khodel et al., where the original gap equation is replaced by a coupled set of equations for the dimensionless gap function $\chi(p)$ defined by $\Delta(p) = \Delta_F \chi(p)$ and a non-linear algebraic equation for the gap magnitude $\Delta_F = \Delta(p_F)$ at the Fermi surface. This method is numerically stable even for small pairing gaps, such as that encountered in the coupled $^3PF_2$ partial wave. Results: We have successfully applied Khodel's method to singlet ($S$) and coupled channel ($SD$ and $PF$) cases in neutron and nuclear matter. Our calculations agree with other ab-initio approaches, where available, and provide crucial inputs for future applications in superfluid systems. \\ ( http://arxiv.org/abs/1408.6281 , 99kb) ------------------------------------------------------------------------------ \\ arXiv:1408.6415 Date: Wed, 27 Aug 2014 14:03:42 GMT (220kb) Title: Reduced kinetic symmetry energy and enhanced significance of isospin degree of freedom in heavy-ion collisions at intermediate energies Authors: Bao-An Li, Wen-Jun Guo and Zhaozhong Shi Categories: nucl-th nucl-ex Comments: 15 pages including 7 figures \\ Besides earlier predictions based on both phenomenological models and microscopic many-body theories, circumstantial evidence was recently found for a reduced kinetic symmetry energy of isospin-asymmetric nucleonic matter compared to the free Fermi gas model prediction due to the short-range correlation of high-momentum neutron-proton pairs. While keeping the total symmetry energy near the saturation density of nuclear matter consistent with existing experimental constraints, we examine the correspondingly enhanced role of the isospin degree of freedom in heavy-ion collisions at intermediate energies due to the reduced (enhanced) kinetic (potential) symmetry energy. \\ ( http://arxiv.org/abs/1408.6415 , 220kb) ------------------------------------------------------------------------------ \\ arXiv:1408.6432 Date: Wed, 27 Aug 2014 15:10:31 GMT (1631kb,D) Title: Borromean structures in medium heavy nuclei Authors: D. Hove, D.V. Fedorov, H.O.U. Fynbo, A.S. Jensen, K. Riisager, N.T. Zinner, E. Garrido Categories: nucl-th Comments: 17 pages, 21 figures \\ Borromean nuclear cluster structures are expected at the corresponding driplines. We locate the regions in the nuclear chart with the most promising constituents, it being protons and alpha-particles and investigate in details the properties of the possible borromean two-alpha systems in medium heavy nuclei. We find in all cases that the alpha-particles are located at the surface of the core-nucleus as dictated by Coulomb and centrifugal barriers. The two lowest three-body bound states resemble a slightly contracted $^{8}\text{Be}$ nucleus outside the core. The next two excited states have more complex structures but with strong components of linear configurations with the core in the middle. Alpha-removal cross sections would be enhanced with specific signatures for these two different types of structures. The even-even borromean two-alpha nucleus, $^{142}$Ba, is specifically investigated and predicted to have $^{134}\text{Te}-\alpha-\alpha$ structure in its ground state and low-lying spectrum. \\ ( http://arxiv.org/abs/1408.6432 , 1631kb) %-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%- ------------------------------------------------------------------------------ \\ arXiv:1408.6278 (*cross-listing*) Date: Tue, 26 Aug 2014 22:57:57 GMT (863kb,D) Title: Modification of the Brink-Axel Hypothesis for High Temperature Nuclear Weak Interactions Authors: G. Wendell Misch, George M. Fuller, B. Alex Brown Categories: astro-ph.HE nucl-th Comments: 15 pages, 19 figures \\ We present shell model calculations of electron capture strength distributions in A=28 nuclei and computations of the corresponding capture rates in supernova core conditions. We find that in these nuclei the Brink-Axel hypothesis for the distribution of Gamow-Teller strength fails at low and moderate initial excitation energy, but may be a valid tool at high excitation. The redistribution of GT strength at high initial excitation may affect capture rates during collapse. If these trends which we have found in lighter nuclei also apply for the heavier nuclei which provide the principal channels for neutronization during stellar collapse, then there could be two implications for supernova core electron capture physics. First, a modified Brink-Axel hypothesis could be a valid approximation for use in collapse codes. Second, the electron capture strength may be moved down significantly in transition energy, which would likely have the effect of increasing the overall electron capture rate during stellar collapse. \\ ( http://arxiv.org/abs/1408.6278 , 863kb) ------------------------------------------------------------------------------ \\ arXiv:1408.6289 (*cross-listing*) Date: Wed, 27 Aug 2014 01:11:57 GMT (14kb) Title: Effective Field Theory for Quark-Gluon Plasma by Bosonization Authors: M.J.Luo Categories: hep-ph nucl-th Comments: 8 pages, comments are welcome \\ Based on an analogy with topologically ordered new state of matter in condensed matter systems, we propose a low energy effective field theory for quark-gluon plasma in quantum chromodynamics (QCD) system. It shows that below a QCD gap which is several times of the critical temperature, the quark-gluon plasma behaves like a topological fluid. \\ ( http://arxiv.org/abs/1408.6289 , 14kb) ------------------------------------------------------------------------------ \\ arXiv:1408.6293 (*cross-listing*) Date: Wed, 27 Aug 2014 02:05:21 GMT (210kb) Title: Turbulent meson condensation in quark deconfinement Authors: Koji Hashimoto, Shunichiro Kinoshita, Keiju Murata, Takashi Oka Categories: hep-th cond-mat.str-el hep-ph nucl-th Comments: 5 pages, 5 figures Report-no: AP-GR-114, OCU-PHYS-409, OU-HET-821, RIKEN-MP-93 \\ In a QCD-like strongly coupled gauge theory at large N_c, using the AdS/CFT correspondence, we find that heavy quark deconfinement is accompanied by a coherent condensation of higher meson resonances. This is revealed in non-equilibrium deconfinement transitions triggered by static, as well as, quenched electric fields even below the Schwinger limit. There, we observe a "turbulent" energy flow to higher meson modes, which finally results in the quark deconfinement. Our observation is consistent with seeing deconfinement as a condensation of long QCD strings. \\ ( http://arxiv.org/abs/1408.6293 , 210kb) ------------------------------------------------------------------------------ \\ arXiv:1408.6305 (*cross-listing*) Date: Wed, 27 Aug 2014 03:50:28 GMT (1638kb,D) Title: The QCD Equation of State to $\mathcal{O}(\mu_B^4)$ from Lattice QCD Authors: Prasad Hegde Categories: hep-lat hep-ph nucl-ex nucl-th Comments: 4 pages, 11 figures; contribution to the proceedings of Quark Matter 2014 Report-no: NPA-D-14-00534R1 \\ We present first results from a first-principles calculation of the QCD equation of state to $\mathcal{O}(\mu_B^4)$, where $\mu_B$ is the baryon chemical potential. We find that second-order corrections are sufficient for a large part of the freeze-out temperature and baryon chemical potential range achieved by the RHIC beam energy scan. Nevertheless, higher-order corrections are necessary to extend the validity of the equation of state down to beam energies $s^{1/2}_{NN}\sim 20$ GeV. \\ ( http://arxiv.org/abs/1408.6305 , 1638kb) ------------------------------------------------------------------------------ \\ arXiv:1408.6329 (*cross-listing*) Date: Wed, 27 Aug 2014 06:51:00 GMT (753kb) Title: Bulk and shear viscosities of hot and dense hadron gas Authors: Guru Prakash Kadam, Hiranmaya Mishra Categories: hep-ph nucl-th Comments: 12 pages with 14 figures \\ We estimate bulk and shear viscosity at finite temperature and baryon densities of hadronic matter within hadron resonance gas model. For bulk viscosity we use low energy theorems of QCD for the energy momentum tensor correlators. For shear viscosity coefficient, we estimate the same using molecular kinetic theory to relate the shear viscosity coefficient to average momentum of the hadrons in the hot and dense hadron gas. The bulk viscosity to entropy ratio increases with chemical potential and is related to the reduction of velocity of sound at nonzero chemical potential. The shear viscosity to entropy ratio on the other hand, shows a nontrivial behavior with the ratio decreasing with chemical potential for small temperatures but increasing with chemical potential at high temperatures and is related to decrease of entropy density with chemical potential at high temperature due to finite volume of the hadrons. \\ ( http://arxiv.org/abs/1408.6329 , 753kb) %%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%% ------------------------------------------------------------------------------ \\ arXiv:1301.6542 replaced with revised version Wed, 27 Aug 2014 11:57:37 GMT (59kb) Title: Few-body hierarchy in non-relativistic functional renormalization group equations and a decoupling theorem Authors: Stefan Floerchinger Categories: nucl-th cond-mat.quant-gas hep-ph Comments: 9 pages, 8 figures, published version Report-no: CERN-PH-TH/2013-014 Journal-ref: Nucl. Phys. A 927, 119 (2014) DOI: 10.1016/j.nuclphysa.2014.04.013 \\ ( http://arxiv.org/abs/1301.6542 , 59kb) ------------------------------------------------------------------------------ \\ arXiv:1305.3825 (*cross-listing*) replaced with revised version Wed, 27 Aug 2014 14:29:00 GMT (997kb) Title: Explaining observations of rapidly rotating neutron stars in LMXBs Authors: Mikhail E. Gusakov, Andrey I. Chugunov and Elena M. Kantor (Ioffe Institute) Categories: astro-ph.SR astro-ph.HE gr-qc nucl-th Comments: Updated and extended version accepted for publication in Phys. Rev. D; discussion of a NS fate after the LMXB stage (Sec. VII and Appendix D) is added; 32 pages, 9 figures, 1 table \\ ( http://arxiv.org/abs/1305.3825 , 997kb) ------------------------------------------------------------------------------ \\ arXiv:1311.5389 (*cross-listing*) replaced with revised version Wed, 27 Aug 2014 11:34:22 GMT (849kb,D) Title: Isotropization from Color Field Condensate in heavy ion collisions Authors: Stefan Floerchinger and Christof Wetterich Categories: hep-ph nucl-th Comments: 30 pages, 11 figures, published version Report-no: CERN-PH-TH/2013-280 DOI: 10.1007/JHEP03(2014)121 \\ ( http://arxiv.org/abs/1311.5389 , 849kb) ------------------------------------------------------------------------------ \\ arXiv:1311.7613 (*cross-listing*) replaced with revised version Wed, 27 Aug 2014 11:41:19 GMT (1427kb,D) Title: Kinetic freeze-out, particle spectra and harmonic flow coefficients from mode-by-mode hydrodynamics Authors: Stefan Floerchinger and Urs Achim Wiedemann Categories: hep-ph nucl-th Comments: 20 pages, 4 figures, published version Report-no: CERN-PH-TH/2013-288 Journal-ref: Phys. Rev. C 89, 034914 (2014) DOI: 10.1103/PhysRevC.89.034914 \\ ( http://arxiv.org/abs/1311.7613 , 1427kb) ------------------------------------------------------------------------------ \\ arXiv:1401.3689 (*cross-listing*) replaced with revised version Wed, 27 Aug 2014 15:19:25 GMT (3501kb,D) Title: Improved light quark masses from pseudoscalar sum rules Authors: Stephan Narison (LUPM-CNRS-Montpellier, France) Categories: hep-ph hep-lat nucl-th Comments: 16 pages, 18 figures, 3 tables. Strongly improved version. Some comments and references added. Extended discussions. Slight changes in the values of the light quark masses \\ ( http://arxiv.org/abs/1401.3689 , 3501kb) ------------------------------------------------------------------------------ \\ arXiv:1406.2523 (*cross-listing*) replaced with revised version Wed, 27 Aug 2014 06:35:12 GMT (86kb) Title: A discussion of deuteron transverse charge densities Authors: Cuiying Liang, Yubing Dong and Weihong Liang Categories: hep-ph nucl-th Comments: 6 pages, 5 tables, 3 figures Journal-ref: Commun. Theor. Phys. 62, 383-387, 2014 \\ ( http://arxiv.org/abs/1406.2523 , 86kb) ------------------------------------------------------------------------------ \\ arXiv:1407.0432 replaced with revised version Wed, 27 Aug 2014 09:52:32 GMT (196kb) Title: Nuclear symmetry energy encounters in-medium $NN$ cross section in heavy-ion collisions at lower beam energies Authors: Wen-Mei Guo, Gao-Chan Yong, Wei Zuo Categories: nucl-th Comments: 5 pages, 7 figures. added one figure and related discussions \\ ( http://arxiv.org/abs/1407.0432 , 196kb) %%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%--- 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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