Gluodynamics and deconfinement phase transition under rotation from holography

Abstract We investigate rotating effect on deconfinement phase transition in an Einstein-Maxwell-Dilaton (EMD) model in bottom-up holographic QCD approach. By constructing a rotating black hole, which is supposed to be dual to rotating strongly coupled nuclear matter, we investigate the thermodynamic quantities, including entropy density, pressure, energy density, trace anomaly, sound speed and specific heat for both pure gluon system and two-flavor system under rotation. It is shown that those thermodynamic quantities would be enhanced by large angular velocity. Also, we extract the information of phase transition from those thermodynamic quantities, as well as the order parameter of deconfinement phase transition, i.e. the loop operators. It is shown that, in the T − ω plane, for two-flavor case with small chemical potential, the phase transition is always crossover. The transition temperature decreases slowly with angular velocity and chemical potential. For pure gluon system with zero chemical potential, the phase transition is always first order, while at finite chemical potential a critical end point (CEP) will present in the T − ω plane.

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Analytic study on chiral phase transition in holographic QCD

Journal of High Energy Physics ◽

10.1007/jhep02(2021)055 ◽

2021 ◽

Vol 2021 (2) ◽

Author(s):

Meng-Wei Li ◽

Yi Yang ◽

Pei-Hung Yuan

Keyword(s):

Phase Transition ◽

Phase Diagram ◽

Black Hole ◽

Chemical Potential ◽

Chiral Symmetry Breaking ◽

Chiral Phase ◽

First Order ◽

Holographic Qcd ◽

Small Chemical ◽

Bypass Mechanism

Abstract The chiral symmetry breaking (χsb) is one of the most fundamental problems in QCD. In this paper, we calculate quark condensation analytically in a holographic QCD model dual to the Einstein-Maxwell-Dilaton (EMD) system coupled to a probe scalar field. We find that the black hole phase transition in the EMD system seriously affects χsb. At small chemical potential, χsb behaves as a crossover. For large chemical potential μ > μc, χsb becomes first order with exactly the same transition temperature as the black hole phase transition by a bypass mechanism. The phase diagram we obtained is qualitatively consistent with the recent results from lattice QCD simulations and NJL models.

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Confinement-deconfinement phase transition for heavy quarks in a soft wall holographic QCD model

Journal of High Energy Physics ◽

10.1007/jhep12(2015)161 ◽

2015 ◽

Vol 2015 (12) ◽

pp. 1-22 ◽

Cited By ~ 10

Author(s):

Yi Yang ◽

Pei-Hung Yuan

Keyword(s):

Phase Transition ◽

Heavy Quarks ◽

Soft Wall ◽

Holographic Qcd ◽

Deconfinement Phase Transition

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Dissipation in holographic superfluids

Journal of High Energy Physics ◽

10.1007/jhep09(2021)134 ◽

2021 ◽

Vol 2021 (9) ◽

Author(s):

Aristomenis Donos ◽

Polydoros Kailidis ◽

Christiana Pantelidou

Keyword(s):

Phase Transition ◽

Black Hole ◽

Chemical Potential ◽

Constitutive Relations ◽

Transport Coefficients ◽

Heat Current ◽

Goldstone Mode ◽

Thermodynamic Quantities ◽

Conserved Current ◽

Dissipative Terms

Abstract We study dissipation in holographic superfluids at finite temperature and zero chemical potential. The zero overlap with the heat current allows us to isolate the physics of the conserved current corresponding to the broken global U(1). By using analytic techniques we write constitutive relations including the first non-trivial dissipative terms. The corresponding transport coefficients are determined in terms of thermodynamic quantities and the black hole horizon data. By analysing their behaviour close to the phase transition we show explicitly the breakdown of the hydrodynamic expansion. Finally, we study the pseudo-Goldstone mode that emerges upon introducing a perturbative symmetry breaking source and we determine its resonant frequency and decay rate.

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A DYNAMICAL, CONFINING MODEL AND BULK VISCOSITY OF QCD MATTER AT FINITE TEMPERATURE

Modern Physics Letters A ◽

10.1142/s0217732310033293 ◽

2010 ◽

Vol 25 (20) ◽

pp. 1689-1696 ◽

Cited By ~ 2

Author(s):

YU JIANG ◽

BIN WANG ◽

WEI-MIN SUN ◽

HONG-SHI ZONG

Keyword(s):

Phase Transition ◽

Transition Temperature ◽

Bulk Viscosity ◽

Sharp Increase ◽

Transition Point ◽

Equation Model ◽

Phase Transition Point ◽

Thermodynamic Quantities ◽

Velocity Of Sound ◽

Trace Anomaly

In this paper we calculate the thermodynamic quantities and bulk viscosity in a simple confining Dyson–Schwinger equation model of two-flavor QCD. Our results show that the velocity of sound shows a sharp increase around [Formula: see text] and at the phase transition temperature [Formula: see text] the derivative of the velocity with respect to T has a distinct change. It is also found that the trace anomaly increases sharply below the phase transition point and the bulk viscosity has a peak located at [Formula: see text] which is almost the same as the peak of the trace anomaly. A comparison of our results with those in the previous literature is given.

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Dark confinement-deconfinement phase transition: a roadmap from Polyakov loop models to gravitational waves

Journal of High Energy Physics ◽

10.1007/jhep09(2021)060 ◽

2021 ◽

Vol 2021 (9) ◽

Author(s):

Zhaofeng Kang ◽

Jiang Zhu ◽

Shinya Matsuzaki

Keyword(s):

Phase Transition ◽

Gravitational Wave ◽

Gravitational Waves ◽

Latent Heat ◽

Polyakov Loop ◽

Thermodynamic Quantities ◽

Point Interactions ◽

Yang Mills ◽

First Order ◽

Deconfinement Phase Transition

Abstract We explore the confinement-deconfinement phase transition (PT) of the first order (FO) arising in SU(N) pure Yang-Mills theory, based on Polyakov loop models (PLMs), in light of the induced gravitational wave (GW) spectra. We demonstrate that the PLMs with the Haar measure term, involving models successful in QCD with N = 3, are potentially incompatible with the large N scaling for the thermodynamic quantities and the latent heat at around the criticality of the FOPT reported from the lattice simulations. We then propose a couple of models of polynomial form, which we call the 4-6 PLM (with four- and six-point interactions among the basic PL fields which have center charge 1) and 4-8 PLM (with four- and eight-point interactions), and discuss how such models can naturally arise in the presence of a heavy PL with charge 2. We show that those models give the consistent thermodynamic and large N properties at around the criticality. The predicted GW spectra are shown to have high enough sensitivity to be probed in the future prospected interferometers such as BBO and DECIGO.

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Entanglement entropy in strongly correlated systems with confinement/deconfinement phase transition and anisotropy

EPJ Web of Conferences ◽

10.1051/epjconf/201922203024 ◽

2019 ◽

Vol 222 ◽

pp. 03024 ◽

Cited By ~ 1

Author(s):

Pavel Slepov

Keyword(s):

Heavy Ions ◽

Chemical Potential ◽

Entanglement Entropy ◽

Three Dimensional ◽

Entropy Density ◽

Strongly Correlated ◽

Holographic Model ◽

Holographic Entanglement Entropy ◽

Maxwell Fields ◽

Deconfinement Phase Transition

Five-dimensional anisotropic gravity with nontrivial dilaton field and two Maxwell fields is chosen for the holographic model, which allows to reproduce the multiplicity dependence on energy obtained from heavy-ions collisions [1, 2]. Holographic entanglement entropy and its density are calculated for three-dimensional subsystems in this anisotropic background. These elongated subsystems have arbitrary spatial orientation in relation to the line of heavy-ions collisions. The divergences of holographic entanglement entropy are discussed. The entanglement entropy density has sharp spikes around the critical temperature for given chemical potential and anisotropy.

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Holographic entanglement entropy in general holographic superconductor models with logarithmic nonlinear electrodynamics

The European Physical Journal C ◽

10.1140/epjc/s10052-021-09146-0 ◽

2021 ◽

Vol 81 (4) ◽

Author(s):

Weiping Yao ◽

Qiong Yang ◽

Xiaobao Liu ◽

Jiliang Jing

Keyword(s):

Phase Transition ◽

General Feature ◽

Chemical Potential ◽

Entanglement Entropy ◽

Phase Transition Point ◽

Nonlinear Electrodynamics ◽

Holographic Superconductor ◽

Holographic Entanglement Entropy ◽

Deconfinement Phase Transition ◽

Second Order Phase Transition

AbstractWe explore the behaviors of the holographic entanglement entropy (HEE) in holographic superconductor models with logarithmic nonlinear electrodynamics (LNE) both in AdS soliton and in AdS black hole backgrounds. We observe that the slope of the HEE at the phase transition point behaves discontinuously for different LNE parameters b and geometry parameters $$\ell $$ ℓ , which may be a quite general feature for the second order phase transition. Moreover, at the critical point, the stronger nonlinearity of the LNE gives rise to the smaller HEE in metal/superconductor while leaves the HEE in insulator/superconductor model as is. Interestingly, the behavior of the HEE also implies a “confinement/deconfinement” phase transition in the insulator/superconductor model, and the critical width of the phase transition depends on the chemical potential and the strength of the LNE.

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Study of phases in a holographic QCD model

International Journal of Modern Physics A ◽

10.1142/s0217751x21502134 ◽

2021 ◽

Author(s):

Varun Sethi

Keyword(s):

Phase Transition ◽

Gauge Symmetry ◽

Finite Temperature ◽

Chemical Potential ◽

Baryon Number ◽

Boundary Theory ◽

Gauge Fields ◽

Yang Mills ◽

Holographic Qcd

Witten–Sakai–Sugimoto model is used to study Yang–Mills theory with flavors and large number of colors at finite temperature and in the presence of chemical potential for baryon number and isospin. Sources for [Formula: see text] and [Formula: see text] gauge fields on the flavor 8-branes are D4-branes wrapped on [Formula: see text] part of the background. Here, gauge symmetry on the flavor branes has been decomposed as [Formula: see text] and [Formula: see text] is within [Formula: see text] and generated by the diagonal generator. We show various brane configurations, along with the phases in the boundary theory they correspond to, and explore the possibility of phase transition between various pairs of phases.

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