Finite-temperature QCD

Laine, M.

doi:10.22323/1.091.0006

Cited by 6 publications

(9 citation statements)

References 27 publications

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“…The question of equilibration of charm, however, is not completely settled as argued, for example, in Ref. [9]. Furthermore, the situation may change for the future LHC experiments.…”

Section: The Effects Of the Charm Quark On The Eosmentioning

confidence: 99%

QCD thermodynamics with nonzero chemical potential atNt=6and effects from heavy quarks

DeTar¹,

Levkova²,

Gottlieb³

et al. 2010

Phys. Rev. D

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We extend our work on QCD thermodynamics with 2 þ 1 quark flavors at nonzero chemical potential to finer lattices with N t ¼ 6. We study the equation of state and other thermodynamic quantities, such as quark number densities and susceptibilities, and compare them with our previous results at N t ¼ 4. We also calculate the effects of the addition of the charm and bottom quarks on the equation of state at zero and nonzero chemical potential. These effects are important for cosmological studies of the early Universe.

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“…The question of equilibration of charm, however, is not completely settled as argued, for example, in Ref. [9]. Furthermore, the situation may change for the future LHC experiments.…”

Section: The Effects Of the Charm Quark On The Eosmentioning

confidence: 99%

QCD thermodynamics with nonzero chemical potential atNt=6and effects from heavy quarks

DeTar¹,

Levkova²,

Gottlieb³

et al. 2010

Phys. Rev. D

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“…In particular, the lattice determination of equilibrium thermodynamic observables in the SU(3) gauge theory is considered as a solved problem [36]; on the other hand, several studies of finite-temperature QCD with dynamical fermions have begun appearing during the last decade [37][38][39][40][41][42][43][44], and today large-scale unquenched simulations can be done at or close to the physical point; recent results are reviewed in refs. [45][46][47].…”

Section: Introductionmentioning

confidence: 99%

Thermodynamics of the QCD Plasma and the Large-NLimit

2009

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The equilibrium thermodynamic properties of the SU(N) plasma are studied nonperturbatively in the large-N limit, via high-precision lattice simulations at temperatures from 0.8T(c) to 3.4T(c) (T(c) being the critical deconfinement temperature). Our results for SU(N) Yang-Mills theories with N=3, 4, 5, 6, and 8 colors show a very mild dependence on N, supporting the idea that the QCD plasma could be described by models based on the large-N limit. We compare our data with various theoretical descriptions, including, in particular, the improved holographic QCD model proposed by Kiritsis and collaborators. We also comment on the relevance of an AdS/CFT description in a phenomenologically interesting temperature range where the system, while still strongly coupled, becomes approximately scale invariant. Finally, we extrapolate our results to the N --> infinity limit.

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“…It allows one, for instance, to determine the equation of state of Quantum Chromodynamics, which in turn is an essential ingredient to understand the properties of matter created in heavy ion collisions, and to model the behavior of hot matter in the early universe (for recent reviews see Ref. [3,4]). Obtaining first-principles predictions from a thermal field theory is often challenging since it describes an infinite number of degrees of freedom subject to both quantum and thermal fluctuations.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic potentials from shifted boundary conditions: the scalar-field theory case

Giusti

Meyer

2011

J. High Energ. Phys.

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In a thermal field theory, the cumulants of the momentum distribution can be extracted from the dependence of the Euclidean path integral on a shift in the fields built into the temporal boundary condition. When combined with the Ward identities associated with the invariance of the theory under the Poincaré group, thermodynamic potentials such as the entropy or the pressure can be directly inferred from the response of the system to the shift. Crucially the argument holds, up to harmless finite-size and discretization effects, even if translational and rotational invariance are broken to a discrete subgroup of finite shifts and rotations such as in a lattice box. The formulas are thus applicable at finite lattice spacing and volume provided the derivatives are replaced by their discrete counterpart, and no additive or multiplicative ultraviolet-divergent renormalizations are needed to take the continuum limit. In this paper we present a complete derivation of the relevant formulas in the scalar field theory, where several technical complications are avoided with respect to gauge theories. As a by-product we obtain a recursion relation among the cumulants of the momentum distribution, and formulae for finite-volume corrections to several well-known thermodynamic identities.

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Finite-temperature QCD

Abstract: I start by discussing recent ideas concerning three different heavy quark related observables in finite-temperature QCD. Subsequently selected studies related to light quarks and gluons are reviewed, with a focus on thermodynamic observables, screening masses, and sum rules.

Cited by 6 publications

References 27 publications

QCD thermodynamics with nonzero chemical potential atNt=6and effects from heavy quarks

QCD thermodynamics with nonzero chemical potential atNt=6and effects from heavy quarks

Thermodynamics of the QCD Plasma and the Large-NLimit

Thermodynamic potentials from shifted boundary conditions: the scalar-field theory case

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