QCD phase structure at finite temperature and density

Fu, Weijie; Pawlowski, Jan M.; Rennecke, Fabian

doi:10.1103/physrevd.101.054032

Cited by 270 publications

(407 citation statements)

References 244 publications

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“…The temperature of the critical endpoint may be obtained with the help of Eq. Curiously, these numbers come quite close to the recent estimation of the location of the critical end point (T CEP , µ CEP B ) = (107, 635) MeV obtained by means of functional renormalization group [49], as well as to other estimations (we refer a reader to Ref. [49] for a detailed review).…”

Section: Shrinking Chiral Width and Critical Chiral Endpointsupporting

confidence: 88%

Finite-density QCD transition in a magnetic background field

et al. 2019

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Using numerical simulations of lattice QCD with physical quark masses, we reveal the influence of magnetic-field background on chiral and deconfinement crossovers in finite-temperature QCD at low baryonic density. In the absence of thermodynamic singularity, we identify these transitions with inflection points of the approximate order parameters: normalized light-quark condensate and renormalized Polyakov loop, respectively. We show that the quadratic curvature of the chiral transition temperature in the "temperature-chemical potential" plane depends rather weakly on the strength of the background magnetic field. At weak magnetic fields, the thermal width of the chiral crossover gets narrower as the density of the baryon matter increases, possibly indicating a proximity to a real thermodynamic phase transition. Remarkably, the curvature of the chiral thermal width flips its sign at eB fl 0.6 GeV 2 , so that above the flipping point B > B fl , the chiral width gets wider as the baryon density increases. Approximately at the same strength of magnetic field, the chiral and deconfining crossovers merge together at T ≈ 140 MeV. The phase diagram in the parameter space "temperature-chemical potential-magnetic field" is outlined, and single-quark entropy and single-quark magnetization are explored. The curvature of the chiral thermal width allows us to estimate an approximate position of the chiral critical endpoint at zero magnetic field: (T CEP c , µ CEP B ) = (100(25) MeV, 800(140) MeV).

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Section: Shrinking Chiral Width and Critical Chiral Endpointsupporting

confidence: 88%

Finite-density QCD transition in a magnetic background field

et al. 2019

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“…This is the characteristic experimental signature of the critical point we are looking for in the heavy-ion collision experiment. Theoretically, the properties of QCD phase diagram at finite baryon density and the signatures of conserved charge fluctuations near the QCD critical point have been extensively studied by various model calculations, such as Lattice QCD [10,[18][19][20][21][22]98], NJL, PNJL model [99][100][101][102][103][104][105][106], PQM, FRG model [107][108][109], Dyson-Schwinger Equation (DSE) method [110][111][112][113], chiral hydrodynamics [114] and other effective models [94, [115][116][117][118][119]. However, one should keep in mind that the above results are under the assumption of thermal equilibrium with infinite and static medium.…”

Section: Beam Energy Dependence Of the Higher-order Cumulants Of Net-mentioning

confidence: 99%

A Study of the Properties of the QCD Phase Diagram in High-Energy Nuclear Collisions

Luo

Shi

et al. 2020

Particles

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With the aim of understanding the phase structure of nuclear matter created in high-energy nuclear collisions at finite baryon density, a beam energy scan program has been carried out at Relativistic Heavy Ion Collider (RHIC). In this mini-review, most recent experimental results on collectivity, criticality and heavy flavor productions will be discussed. The goal here is to establish the connection between current available data and future heavy-ion collision experiments in a high baryon density region.Particles 2020, xx, 5 0 -5% 60 -80% 0 -5% Au+Au at RHIC Pb+Pb at LHC A. Andronic, et al., NPA834, 237(10) J. Cleymans, et al., PRC73, 34905(06) Lattice fits

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“…Recently, functional methods for first-principles QCD have made significant progress in the description of this regime; see Refs. [1,2] for functional renormalization group studies (fRG) and, e.g., Refs. [3][4][5] for Dyson-Schwinger studies.…”

Section: Introductionmentioning

confidence: 99%

Chiral susceptibility in ( 2+1 )-flavor QCD

Braun

Pawlowski

et al. 2020

Phys. Rev. D

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We calculate chiral susceptibilities in (2 þ 1)-flavor QCD for different masses of the light quarks using the functional renormalization group (fRG) approach to first principles QCD. We follow the evolution of the chiral susceptibilities with decreasing masses as obtained from both the light-quark and the reduced quark condensate. The latter compares very well with recent results from the HotQCD Collaboration for pion masses m π ≳ 100 MeV. For smaller pion masses, fRG and lattice results are still consistent. In particular, the estimates for the chiral critical temperature are in very good agreement. We close by discussing different extrapolations to the chiral limit.

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QCD phase structure at finite temperature and density

Cited by 270 publications

References 244 publications

Finite-density QCD transition in a magnetic background field

Finite-density QCD transition in a magnetic background field

A Study of the Properties of the QCD Phase Diagram in High-Energy Nuclear Collisions

Chiral susceptibility in ( 2+1 )-flavor QCD

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