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Within the ultra-relativistic quantum molecular dynamics (UrQMD) model, in which the Lorentz-covariant treatment of nuclear mean-field potential is considered, the fluctuations of net-baryon, net-charge and deuterons multiplicity…

Nuclear Theory · Physics 2020-04-27 Yunxiao Ye , Yongjia Wang , Qingfeng Li , Dinghui Lu , Fuqiang Wang

Rapidly rotating nuclei provide us good testing grounds to study the pairing correlations; in fact, the transition from the superfluid to the normal phase is realized at high-spin states. The role played by the pairing correlations is quite…

Nuclear Theory · Physics 2017-08-23 Yoshifumi R. Shimizu

The thermodynamic properties of nuclei are studied in a mean field model using a Skryme interaction. Properties of two component systems are investigated over the complete range of proton fraction from a system of pure neutrons to a system…

Nuclear Theory · Physics 2008-11-26 S. J. Lee , A. Z. Mekjian

The properties of critical parameters and phase diagram structure of liquid-gas phase transition are investigated in thermal symmetric and asymmetric nuclear matter with the covariant density functional (CDF) theory. Although uncertainty…

Nuclear Theory · Physics 2019-11-20 Shen Yang , Bo Nan Zhang , Bao Yuan Sun

Studies of the QCD phase diagram must properly include nucleonic degrees of freedom and their thermodynamics in the range of baryon chemical potentials characteristic of nuclear matter. A useful framework for incorporating relevant nuclear…

High Energy Physics - Phenomenology · Physics 2014-01-27 Matthias Drews , Thomas Hell , Bertram Klein , Wolfram Weise

A previous study of nuclear matter in a chiral nucleon-meson model is extended to isospin-asymmetric matter. Fluctuations beyond mean-field approximation are treated in the framework of the functional renormalization group. The nuclear…

Nuclear Theory · Physics 2015-06-23 Matthias Drews , Wolfram Weise

A new scenario for neutron-star cooling is proposed, based on the correspondence between pion condensation, occurring in neutron matter due to critical spin-isospin fluctuations, and the metal-insulator phase transition in a two-dimensional…

Astrophysics · Physics 2008-11-26 V. A. Khodel , J. W. Clark , M. Takano , M. V. Zverev

We study fluctuations of particle number in the presence of critical point by utilizing molecular dynamics simulations of the classical Lennard-Jones fluid in a periodic box. The numerical solution of the $N$-body problem naturally…

High Energy Physics - Phenomenology · Physics 2022-04-27 Volodymyr A. Kuznietsov , Oleh Savchuk , Mark I. Gorenstein , Volker Koch , Volodymyr Vovchenko

In this paper, we introduce a freeze-out scheme for the dynamical models near the QCD critical point through coupling the decoupled classical particles with the order parameter field. With a modified distribution function that satisfies…

Nuclear Theory · Physics 2016-09-14 Lijia Jiang , Pengfei Li , Huichao Song

Particle number fluctuations and correlations in nucleus-nucleus collisions at SPS and RHIC energies are studied within the statistical hadron-resonance gas model in different statistical ensembles and in the Hadron-String-Dynamics (HSD)…

Nuclear Theory · Physics 2009-11-09 V. P. Konchakovski , M. Hauer , M. I. Gorenstein , E. L. Bratkovskaya

We perform a finite-size scaling analysis of net-proton number cumulants in Au+Au collisions at center-of-mass energies between $\sqrt{s_{\rm{NN}}} = 2.4$ GeV and 54.4 GeV to search for evidence of a critical point in the QCD phase diagram.…

Nuclear Theory · Physics 2024-05-20 Agnieszka Sorensen , Paul Sorensen

We investigate the role of the Coulomb interaction on the liquid-gas phase transition of nuclear matter with three different values of proton fraction ($Y_p$=0.5,0.3 and 0.1), relevant for heavy-ion physics as well as various astrophysical…

Nuclear Theory · Physics 2017-06-14 Rana Nandi , Stefan Schramm

The magnitude of the local fluctuations of the net baryon number and electric charge differs widely between the confined and deconfined phases, and the difference is partially frozen at an early stage in relativistic heavy ion collisions.…

Nuclear Theory · Physics 2010-05-28 M. Asakawa , U. Heinz , B. Muller

We discuss the role of cumulants of net baryon number fluctuations in the analysis of critical behavior in QCD and the study of freeze-out conditions in heavy ion experiments. Through the comparison of the current set of measurements of…

High Energy Physics - Phenomenology · Physics 2013-05-29 Frithjof Karsch , Krzysztof Redlich

We study the Fourier coefficients b(k,T) of the net baryon number density in strongly interacting matter at finite temperature. We show that singularities in the complex chemical potential plane connected with phase transitions are…

High Energy Physics - Phenomenology · Physics 2019-04-05 Gabor Andras Almasi , Bengt Friman , Kenji Morita , Krzysztof Redlich

Fluctuations of conserved quantities, such as baryon, electric charge and strangeness number, are sensitive observables in heavy-ion collisions to search for the QCD phase transition and critical point. In this paper, we performed a…

Nuclear Experiment · Physics 2017-07-17 Chang Zhou , Ji Xu , Xiaofeng Luo , Feng Liu

The linear response of a nonrelativistic superfluid baryon system on an external weak field is investigated while taking into account of the Fermi-liquid interactions. We generalize the theory developed by Leggett for a superfluid…

High Energy Astrophysical Phenomena · Physics 2009-08-07 L. B. Leinson

We investigate properties of the symmetry term in the equation-of-state (EOS) of nuclear matter (NM) from the analysis of simulations of fragmentation events in intermediate energy heavy ion collisions. For charge asymmetric systems a…

Nuclear Theory · Physics 2016-09-08 V. Baran , M. Colonna , M. Di Toro , V. Greco , M. Zielinska-Phabe , H. H. Wolter

We investigate the net-baryon number fluctuations across the chiral phase transition at finite density in the strong coupling and chiral limit. Mesonic field fluctuations are taken into account by using the auxiliary field Monte-Carlo…

High Energy Physics - Lattice · Physics 2015-12-29 Terukazu Ichihara , Kenji Morita , Akira Ohnishi

We investigate effects of thermal and quantum fluctuations of the superfluid order parameter in $^1S_{0}$ superfluids in neutron stars. We construct a separable potential to reproduce the $^1S_{0}$ phase shift reconstructed by using the…

Nuclear Theory · Physics 2020-12-08 Daisuke Inotani , Shigehiro Yasui , Muneto Nitta