The phase diagram of dense QCD

Fukushima, Kenji; Hatsuda, Tetsuo

doi:10.1088/0034-4885/74/1/014001

Cited by 901 publications

(992 citation statements)

References 288 publications

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“…The result is, of course, the same as with the other method. 10 Besides the eigenvalues, it is also interesting to study the properties of the eigenstates, i.e., of the quasiparticles in the CDW background. This has already been done by Dautry and Nyman [49] for the non-relativistic limit, and later by Kutschera et al [41,78] and by Nakano and Tatsumi [42] for the relativistic case.…”

Section: Eigenvalue Spectrum and Expectation Valuesmentioning

confidence: 99%

“…In particular, while great progress has been made in the past few years in characterizing strong-interaction matter at finite temperature thanks to the development of ab-initio lattice calculations [8] and to increasingly accurate data from heavy-ion collision experiments (see, e.g., [9]), the nature of QCD at finite densities (or baryon chemical potentials) is still poorly understood (see [10,11] for reviews on recent theoretical developments). On the experimental side, most heavy-ion data focuses on the high-temperature regime [9], and only recently the attention has started shifting to the finite-density region, particularly with the new beam energy scan runs at RHIC in Brookhaven [12] and the upcoming facilities FAIR in Darmstadt [13] and NICA in Dubna [14].…”

Section: Introductionmentioning

confidence: 99%

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Inhomogeneous chiral condensates

Buballa

Carignano

2015

Progress in Particle and Nuclear Physics

241

258

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The chiral condensate, which is constant in vacuum, may become spatially modulated at moderately high densities where in the traditional picture of the QCD phase diagram a first-order chiral phase transition occurs. We review the current status of this idea, which originally dates back to Migdal's pion condensation, but recently received new momentum through studies on the nature of the chiral critical point and by the conjecture of a quarkyonic-matter phase. We discuss how these nonuniform phases emerge in generalized Ginzburg-Landau analyses as well as in specific calculations, both within effective models and in Dyson-Schwinger or large-N c approaches to QCD. Questions about the most favored shape of the modulations and its dimension, and about the effects of nonzero isospin chemical potential, strange quarks, color superconductivity, and external magnetic fields on these inhomogeneous phases will be addressed as well.

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Section: Eigenvalue Spectrum and Expectation Valuesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Inhomogeneous chiral condensates

Buballa

Carignano

2015

Progress in Particle and Nuclear Physics

241

258

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“…For example, the hot quark-gluon plasma that is generated in heavy ion collisions at the Relativistic Heavy Ion Collider (RHIC) in Brookhaven or at the Large Hadron Collider (LHC) at CERN undergoes an intriguing real-time evolution that is practically impossible to derive from QCD first principles. Even staying within equilibrium thermodynamics, the critical endpoint of the chiral transition line in the QCD phase diagram, which will be investigated experimentally at the Facility for Antiproton and Ion Research (FAIR) at GSI Darmstadt, is difficult to determine accurately using lattice QCD [58,59]. Similarly, due to a severe sign problem, the deep interior of neutron stars, which may contain color superconducting quark matter [60,61] can currently not be addressed nonperturbatively from QCD first principles either.…”

Section: Introductionmentioning

confidence: 99%

Ultracold quantum gases and lattice systems: quantum simulation of lattice gauge theories

2013

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Abelian and non-Abelian gauge theories are of central importance in many areas of physics. In condensed matter physics, Abelian U(1) lattice gauge theories arise in the description of certain quantum spin liquids. In quantum information theory, Kitaev's toric code is a Z(2) lattice gauge theory. In particle physics, Quantum Chromodynamics (QCD), the non-Abelian SU(3) gauge theory of the strong interactions between quarks and gluons, is nonperturbatively regularized on a lattice. Quantum link models extend the concept of lattice gauge theories beyond the Wilson formulation, and are well suited for both digital and analog quantum simulation using ultracold atomic gases in optical lattices. Since quantum simulators do not suffer from the notorious sign problem, they open the door to studies of the real-time evolution of strongly coupled quantum systems, which are impossible with classical simulation methods. A plethora of interesting lattice gauge theories suggests itself for quantum simulation, which should allow us to address very challenging problems, ranging from confinement and deconfinement, or chiral symmetry breaking and its restoration at finite baryon density, to color superconductivity and the real-time evolution of heavy-ion collisions, first in simpler model gauge theories and ultimately in QCD.

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“…a stronglycoupled quark-gluon plasma (sQGP) [2]. These efforts have delivered a sketch of the QCD EoS in the plane spanned by baryon chemical potential (µ B ) and temperature (T ) [3,4].…”

Section: Introductionmentioning

confidence: 99%