Date: Thu, 27 Feb 20 01:24:53 GMT Subject: nucl-th daily 2 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 25 Feb 20 19:00:00 GMT to Wed 26 Feb 20 19:00:00 GMT ------------------------------------------------------------------------------ \\ arXiv:2002.11133 Date: Tue, 25 Feb 2020 19:00:04 GMT (111kb,D) Title: Finite-Temperature Quarkyonic Matter with an Excluded Volume Model for Nuclear Interactions Authors: Srimoyee Sen, Neill C. Warrington Categories: nucl-th astro-ph.HE hep-ph Comments: 17 pages, 6 figures Report-no: INT-PUB-20-006 \\ We compute finite temperature properties of a recently proposed "excluded volume" model of quarkyonic matter under thermodynamic conditions found in binary neutron star mergers. To do so, we extend this model by introducing finite temperature distribution functions and entropy functionals. The main effect of temperature is to decrease by a small amount the baryon density at which the quarkyonic phase emerges, and to increase the total density of quarks. To the extent this model describes reality, we conclude that hot environments such as neutron star mergers are more likely to host deconfined quark matter than their zero temperature counterparts. \\ ( https://arxiv.org/abs/2002.11133 , 111kb) ------------------------------------------------------------------------------ \\ arXiv:2002.11398 Date: Wed, 26 Feb 2020 10:37:36 GMT (267kb,D) Title: Baselines for higher-order cumulants of net-charge distributions from balance function Authors: Igor Altsybeev Categories: nucl-th hep-ex nucl-ex Comments: 15 pages, 10 figures \\ In studies of heavy-ion collisions, fluctuations of conserved quantities are considered as an important signal of the transition between the hadronic and partonic phases of matter. In this paper, the connection between the balance function and several integrated observables used in studies of net-charge fluctuations is discussed. It is highlighted that the difference between balance function definitions used in various experiments has implications on its physical meaning and on the interpretation of balance function integrals as well, for that, several illustrative models are considered. In the second half of the paper, simple expressions for higher-order cumulants of net-charge distribution are derived under the assumption that particle-antiparticle pairs are produced in local processes from sources that are nearly uncorrelated in rapidity. For calculations with these expressions, one needs to know only the balance function integral and low-order cumulants of particle number distribution measured within an experimental acceptance. Values estimated in such a way could be considered as baselines for direct measurements of higher-order net-charge fluctuations. \\ ( https://arxiv.org/abs/2002.11398 , 267kb) %-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%- ------------------------------------------------------------------------------ \\ arXiv:2002.11146 (*cross-listing*) Date: Tue, 25 Feb 2020 19:18:36 GMT (268kb) Title: Quantum Algorithms for Simulating the Lattice Schwinger Model Authors: Alexander F. Shaw, Pavel Lougovski, Jesse R. Stryker, Nathan Wiebe Categories: quant-ph hep-lat nucl-th \\ The Schwinger model (quantum electrodynamics in 1+1 dimensions) is a testbed for the study of quantum gauge field theories. We give scalable, explicit digital quantum algorithms to simulate the lattice Schwinger model in both NISQ and fault-tolerant settings. In particular, we perform a tight analysis of low-order Trotter formula simulations of the Schwinger model, using recently derived commutator bounds, and give upper bounds on the resources needed for simulations in both scenarios. In lattice units, we find a Schwinger model on $N/2$ physical sites with coupling constant $x^{-1/2}$ and electric field cutoff $x^{-1/2}\Lambda$ can be simulated on a quantum computer for time $2xT$ using a number of $T$-gates or CNOTs in $\widetilde{O}( N^{3/2} T^{3/2} \sqrt{x} \Lambda )$ for fixed operator error. This scaling with the truncation $\Lambda$ is better than that expected from algorithms such as qubitization or QDRIFT. Furthermore, we give scalable measurement schemes and algorithms to estimate observables which we cost in both the NISQ and fault-tolerant settings by assuming a simple target observable---the mean pair density. Finally, we bound the root-mean-square error in estimating this observable via simulation as a function of the diamond distance between the ideal and actual CNOT channels. This work provides a rigorous analysis of simulating the Schwinger model, while also providing benchmarks against which subsequent simulation algorithms can be tested. \\ ( https://arxiv.org/abs/2002.11146 , 268kb) ------------------------------------------------------------------------------ \\ arXiv:2002.11233 (*cross-listing*) Date: Wed, 26 Feb 2020 00:38:41 GMT (251kb,D) Title: Heavy Quark Energy Loss in the Quark-Gluon Plasma in the Moller theory Authors: B. Blok (Technion) Categories: hep-ph hep-ex nucl-ex nucl-th Comments: 20 pages, 4 figures \\ We study the energy loss of a heavy quark propagating in the Quark-Gluon Plasma (QGP) in the framework of the Moller theory, including possible large Coulomb logarithms as a perturbation to BDMPSZ bremsstrahlung, described in the Harmonic Oscillator (HO) approximation. We derive the analytical expression that describes the energy loss in the entire emitted gluon frequency region. In the small frequencies region, for angles larger than the dead cone angle, the energy loss is controlled by the BDMPSZ mechanism, while for larger frequencies it is described by N=1 term in the GLV opacity expansion. We estimate corresponding quenching rates for different values of the heavy quark path and different $m/E$ ratios. \\ ( https://arxiv.org/abs/2002.11233 , 251kb) ------------------------------------------------------------------------------ \\ arXiv:2002.11348 (*cross-listing*) Date: Wed, 26 Feb 2020 08:18:22 GMT (85kb) Title: Chiral Radiation Transport Theory of Neutrinos Authors: Naoki Yamamoto and Di-Lun Yang Categories: astro-ph.HE hep-ph nucl-th Comments: 21 pages, no figures \\ We construct the chiral radiation transport equation for left-handed neutrinos in the context of radiation hydrodynamics for core-collapse supernovae. Based on the chiral kinetic theory incorporating quantum corrections due to the chirality of fermions, we derive a general-relativistic form of the chiral transfer equation with collisions. We show that such quantum corrections explicitly break the spherical symmetry and axisymmetry of the system. In the inertial frame, in particular, we find that the so-called side jump leads to quantum corrections in the collisions between neutrinos and matter. We also derive analytic forms of such corrections in the emission and absorption rates for the neutrino absorption process. These corrections result in the generation of kinetic helicity and cross helicity of matter, which should then modify the subsequent evolution of matter. This theoretical framework can be applied to investigate the impacts of the chirality of neutrinos on the evolution of core-collapse supernovae. \\ ( https://arxiv.org/abs/2002.11348 , 85kb) ------------------------------------------------------------------------------ \\ arXiv:2002.11355 (*cross-listing*) Date: Wed, 26 Feb 2020 08:41:01 GMT (7145kb,D) Title: New Constraints on the Supranuclear Equation of State and the Hubble Constant from Nuclear Physics -- Multi-Messenger Astronomy Authors: Tim Dietrich, Michael W. Coughlin, Peter T. H. Pang, Mattia Bulla, Jack Heinzel, Lina Issa, Ingo Tews, Sarah Antier Categories: astro-ph.HE astro-ph.CO gr-qc nucl-th Report-no: LA-UR-20-21470 \\ Neutron-star mergers are associated with violent phenomena that probe physical principles under extreme conditions that are not reproducible in any terrestrial laboratory. Thus, their multi-messenger analysis combining gravitational-wave and electromagnetic signatures from multiple wavelengths is not only of astrophysical interest, but it also allows studying the behavior of supranuclear dense matter, testing the fabric of spacetime, probing the principles of general relativity, and measuring the expansion rate of the Universe. In this work, we perform a multi-messenger analysis of the gravitational wave signal GW170817 and its electromagnetic counterparts AT2017gfo and GRB170817A. By incorporating information from the NICER observation of PSR J0030+0451, the radio observations of PSR J0740+6620, and nuclear theory computations using chiral effective field theory, we provide new constraints on the neutron-star equation of state and the Hubble constant. For our analysis, we make use of the new waveform approximant IMRPhenomPv2_NRTidalv2 for the interpretation of the gravitational wave signal, we employ a newly developed kilonova model, and we derive a new prediction for the debris disk mass surrounding the binary neutron star merger remnant. We determine the radius of a 1.4 solar mass neutron star to be $R_{1.4M_\odot}=10.98^{+0.37}_{-0.38} \rm km$ at $1\sigma$ uncertainty and $R_{1.4M_\odot}=10.98^{+1.00}_{-0.69} \rm km$ at $2\sigma$ uncertainty. In addition, we estimate the Hubble constant to be $H_0=68.4^{+5.2}_{-4.7}\ \rm km /Mpc/s$ at $1\sigma$ uncertainty. We test the consistency of our results and the robustness of our methods by also analyzing the second binary neutron-star merger detection GW190425 and the fact that no electromagnetic counterpart was observed for this event. \\ ( https://arxiv.org/abs/2002.11355 , 7145kb) ------------------------------------------------------------------------------ \\ arXiv:2002.11446 (*cross-listing*) Date: Wed, 26 Feb 2020 13:02:46 GMT (1661kb,D) Title: Measurement of the charge separation along the magnetic field with Signed Balance Function in 200 GeV Au + Au collisions at STAR Authors: Yufu Lin (for the STAR Collaboration) Categories: nucl-ex hep-ex hep-ph nucl-th Comments: 4 pages, 6 figures, Proceedings of 28th International Conference on Ultrarelativistic Nucleus-Nucleus Collisions (Quark Matter 2019) \\ Experimental searches for Chiral Magnetic Effect (CME) in heavy-ion collisions have been going on for a decade, and so far there is no conclusive evidence for its existence. Recently, the Signed Balance Function (SBF), based on the idea of examining the momentum ordering of charged pairs along the in- and out-of-plane directions, has been proposed as a probe of CME. In this approach, a pair of observables is invoked: one is $r_{\mathrm{rest}}$, the out-of-plane to in-plane ratio of $\Delta B$ measured in pair's rest frame, where $\Delta B$ is the difference between signed balance functions; The other is a double ratio, $R_{\mathrm{B}} = r_{\mathrm{rest}}/r_{\mathrm{lab}}$, where $r_{\mathrm{lab}}$ is a measurement similar to $r_{\mathrm{rest}}$ but measured in the laboratory frame. These two observables give opposite responses to the CME-driven charge separation compared to the background correlations arising from resonance flow and global spin alignment. Both $r_{\mathrm{rest}}$ and $R_{\mathrm{B}}$ being larger than unity can be regarded as a case in favor of the existence of CME. It is found experimentally that $r_{\mathrm{rest}}$, $r_{\mathrm{lab}}$ and $R_{\mathrm{B}}$ are larger than unity in Au+Au collisions at 200 GeV, and larger than realistic model calculations with no CME implemented. These findings are difficult to be explained by a background-only scenario. \\ ( https://arxiv.org/abs/2002.11446 , 1661kb) %%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%% ------------------------------------------------------------------------------ \\ arXiv:1908.01918 replaced with revised version Wed, 26 Feb 2020 04:20:34 GMT (235kb) Title: Properties of strange quark stars with isovector interactions Authors: He Liu, Jun Xu, and Che Ming Ko Categories: nucl-th astro-ph.HE astro-ph.SR hep-ph Comments: 7 pages, 8 figures, minor modifications on references and corresponding discussions \\ ( https://arxiv.org/abs/1908.01918 , 235kb) ------------------------------------------------------------------------------ \\ arXiv:1908.06215 (*cross-listing*) replaced with revised version Wed, 26 Feb 2020 11:52:34 GMT (1681kb) Title: Microscopic description of axisymmetric vortices in $^{3}P_{2}$ superfluids Authors: Yusuke Masaki, Takeshi Mizushima, Muneto Nitta Categories: cond-mat.supr-con nucl-th Comments: 15 pages, 8 figures Journal-ref: Phys. Rev. Research 2, 013193 (2020) DOI: 10.1103/PhysRevResearch.2.013193 \\ ( https://arxiv.org/abs/1908.06215 , 1681kb) ------------------------------------------------------------------------------ \\ arXiv:1909.02837 (*cross-listing*) replaced with revised version Wed, 26 Feb 2020 14:56:42 GMT (258kb,D) Title: Study of QCD dynamics using small systems Authors: Suman Deb, Golam Sarwar, Raghunath Sahoo, and Jan-e Alam Categories: hep-ph nucl-ex nucl-th Comments: The paper is revised taking into referee suggestions \\ ( https://arxiv.org/abs/1909.02837 , 258kb) ------------------------------------------------------------------------------ \\ arXiv:1910.01336 replaced with revised version Wed, 26 Feb 2020 12:08:14 GMT (391kb,D) Title: Single- and two-nucleon antikaon absorption in nuclear matter with chiral meson-baryon interactions Authors: J. Hrt\'ankov\'a and \`A. Ramos Categories: nucl-th Comments: manuscript accepted by Phys. Rev. C \\ ( https://arxiv.org/abs/1910.01336 , 391kb) ------------------------------------------------------------------------------ \\ arXiv:1910.05884 replaced with revised version Wed, 26 Feb 2020 11:03:27 GMT (137kb) Title: Study of $\Xi^-$ hypernuclei in the Skyrme-Hartree-Fock approach Authors: Yun Jin, Xian-Rong Zhou, Yi-Yuan Cheng, and H.-J. Schulze Categories: nucl-th \\ ( https://arxiv.org/abs/1910.05884 , 137kb) ------------------------------------------------------------------------------ \\ arXiv:2001.07983 replaced with revised version Wed, 26 Feb 2020 09:53:42 GMT (84kb,D) Title: Equivalence between first-order causal and stable hydrodynamics and Israel-Stewart theory for boost-invariant systems with a constant relaxation time Authors: Arpan Das, Wojciech Florkowski, Jorge Noronha, Radoslaw Ryblewski Categories: nucl-th hep-ph Comments: significant improvement with respect to the previous manuscript, a new author added, 5 pages \\ ( https://arxiv.org/abs/2001.07983 , 84kb) %%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%--- 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/