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相关论文: Introducing the concept of the Widom line in the Q…

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I present the highlights of a recent study of the effective QCD phase diagram on the temperature T and quark chemical potential mu plane, where the strong interactions are modeled using the linear sigma model coupled to quarks. The phase…

高能物理 - 唯象学 · 物理学 2015-09-03 Alejandro Ayala

The superfluid transition of liquid Helium shares an interesting phenomenon with the chiral limit of QCD: the specific heat is finite at the critical point, but has a cusp. From this follows an interesting mixture of universal and…

高能物理 - 格点 · 物理学 2015-03-12 Sourendu Gupta , Rishi Sharma

Location of critical point and mapping the QCD phase boundary still exists as one of the most interesting and studied problems of heavy-ion physics. A new equation of state (EOS) for a gas of extended baryons and pointlike mesons is…

高能物理 - 唯象学 · 物理学 2011-03-23 C. P. Singh , P. K. Srivastava , S. K. Tiwari

In the present paper we propose the van der Waals-like model, which allows a purely analytical study of fluid properties including the equation of state, phase behavior and supercritical fluctuations. We take a square-well system as an…

软凝聚态物质 · 物理学 2015-06-18 V. V. Brazhkin , Yu. D. Fomin , V. N. Ryzhov , E. E. Tareyeva , E. N. Tsiok

We summarize our current understanding of the connection between the QCD phase line and the chemical freeze-out curve as deduced from thermal analyses of yields of particles produced in central collisions between relativistic nuclei.

核理论 · 物理学 2011-01-18 Peter Braun-Munzinger , Johanna Stachel

It is shown that the hadronic matter formed at high temperatures, according to the prescription of the statistical bootstrap principle, develops a critical point at nonzero baryon chemical potential, associated with the end point of a…

高能物理 - 唯象学 · 物理学 2007-05-23 N. G. Antoniou , F. K. Diakonos , A. S. Kapoyannis

Current heavy-ion collision experiments might lead to the discovery of a first-order chiral symmetry breaking phase-transition line, ending in a second-order critical point. Nevertheless, the extraction of information about the equilibrium…

高能物理 - 唯象学 · 物理学 2017-12-14 Eduardo S. Fraga , Maurício Hippert

In the preceding paper(Prog.Theor.Phys.108(2002)929 or hep-ph/0207255), we have shown that the critical line of the first order chiral transition of QCD can have two endpoints. In this addendum, we elucidate the mechanism to realize the…

高能物理 - 唯象学 · 物理学 2009-11-10 Masakiyo Kitazawa , Tomoi Koide , Teiji Kunihiro , Yukio Nemoto

The curvature which characterizes the QCD phase transition at finite temperature and small values of the chemical potential is accessible to lattice simulations. The results for this quantity which have been obtained by several different…

高能物理 - 唯象学 · 物理学 2011-04-20 Bertram Klein , Jens Braun , Bernd-Jochen Schaefer

The pseudogap refers to an enigmatic state of matter with unusual physical properties found below a characteristic temperature $T^*$ in hole-doped high-temperature superconductors. Determining $T^*$ is critical for understanding this state.…

强关联电子 · 物理学 2012-08-02 G. Sordi , P. Sémon , K. Haule , A. -M. S. Tremblay

Finite-temperature phase structure of lattice QCD with the Wilson quark action is analyzed. We show that the critical line at finite temperatures, defined to be the line of vanishing pion screening mass, turns back toward strong coupling,…

高能物理 - 格点 · 物理学 2009-10-28 S. Aoki , A. Ukawa , T. Umemura

One of the distinctive feature of the QCD phase diagram is the possible emergence of a critical endpoint. The critical region around the critical point and the path dependency of the critical exponents is investigated within effective…

高能物理 - 唯象学 · 物理学 2012-02-16 Bernd-Jochen Schaefer , Mathias Wagner

I review recent developments in determining the QCD phase diagram by means of lattice simulations. Since the invention of methods to side-step the sign problem a few years ago, a number of additional variants have been proposed, and…

高能物理 - 格点 · 物理学 2007-05-23 Owe Philipsen

In nucleus-nucleus collisions at ultra-relativistic energies matter is formed with initial energy density significantly exceeding the critical energy density for the transition from hadronic to partonic matter. We will review the…

核实验 · 物理学 2009-11-10 P. Braun-Munzinger

For the first time, we investigate susceptibilities of dense quark matter up to $8$th order using an effective model. Generally higher order susceptibilities will have more sign changes and larger magnitude, thus should give more…

高能物理 - 唯象学 · 物理学 2019-05-22 Wenkai Fan , Xiaofeng Luo , Hongshi Zong

We discuss the phase structure of QCD for $N_f=2$ and $N_f=2+1$ dynamical quark flavours at finite temperature and baryon chemical potential. It emerges dynamically from the underlying fundamental interactions between quarks and gluons in…

高能物理 - 唯象学 · 物理学 2020-04-01 Wei-jie Fu , Jan M. Pawlowski , Fabian Rennecke

QCD matter at finite temperature and density is a subject that has witnessed very impressive theoretical developments in the recent years. In this review I will discuss some new insights on the microscopic degrees of freedom of the QCD…

高能物理 - 格点 · 物理学 2021-09-22 Sayantan Sharma

The long-standing issue of the nature of the critical line of lattice QCD with the Wilson quark action at finite-temperatures, defined to be the line of vanishing pion screening mass, and its relation to the line of finite-temperature…

高能物理 - 格点 · 物理学 2009-10-28 S. Aoki , A. Ukawa , T. Umemura

The chiral critical surface is a surface of second order phase transitions bounding the region of first order chiral phase transitions for small quark masses in the {m_{u,d}, m_s,\mu} parameter space. The potential critical endpoint of the…

高能物理 - 唯象学 · 物理学 2014-11-20 Owe Philipsen

In this Letter we employ lattice simulations to search for the critical point of quantum chromodynamics (QCD). We search for the onset of a first order QCD transition on the phase diagram by following contours of constant entropy density…