Advances in perturbative thermal field theory
Ulrike Kraemmer,Anton Rebhan +1 more
TL;DR: The progress in the last decade in perturbative quantum field theory at high temperatures and densities, made possible by the use of effective field theories and hard thermal/dense loop resummations in ultrarelativistic gauge theories, is reviewed in this paper.
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Abstract: The progress in the last decade in perturbative quantum field theory at high temperatures and densities, made possible by the use of effective field theories and hard thermal/dense loop resummations in ultrarelativistic gauge theories, is reviewed. The relevant methods are discussed in field theoretical models from simple scalar theories to non-Abelian gauge theories including gravity. In the simpler models, the aim is to give a pedagogical account of some of the relevant problems and their resolution, while in the more complicated but also more interesting models such as quantum chromodynamics, a summary of the results obtained so far is given together with references to a few of the most recent developments and open problems.
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Thermodynamics of the QCD Plasma and the Large-N Limit
TL;DR: The 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.
SU(N) gauge theories at large N
TL;DR: In this article, the authors review the theoretical developments and conceptual advances that stemmed from the generalization of QCD to the limit of a large number of color charges, originally proposed by ’t Hooft.
337
Perfect fluid theory and its extensions
TL;DR: In this paper, the authors review the canonical theory for perfect fluids in Euler's and Lagrange's formulations, which is related to a description of extended structures in higher dimensions, including internal symmetry and supersymmetry degrees of freedom.
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Resummation in hot field theories
TL;DR: In this paper, the authors discuss the breakdown of naive perturbation theory at finite temperature and the need for an effective expansion that resums an infinite class of diagrams in the perturbative expansion.
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References
Htl-Resummed Thermodynamics of Hot and Dense Qcd:. AN Update
Anton Rebhan
- 01 Jun 2003
TL;DR: In this article, the authors review the physics of hard thermal loops in the thermodynamics of the quark-gluon plasma through nonperturbative expressions for entropy and density obtained from a Phi-derivable two-loop approximation.
1
Phase Structure of the O(N) Vector Model
William A. Bardeen,Moshe Moshe +1 more
TL;DR: In this article, a large-N analysis of the O(N) lambdaPhi/sup 4/ theory in four dimensions was performed, and it was shown that the lowest-lying state is a metastable state and the decay rate of this false vacuum into a broken-symmetry state is suppressed.
Quark dispersion relation and dilepton production in the quark-gluon plasma
A. Peshier,Markus H. Thoma +1 more
TL;DR: Under very general assumptions, it is shown that the quark dispersion relation in the quarks-gluon plasma is given by two collective branches, of which one has a minimum at a nonvanishing momentum that leads to structures in the low mass dilepton production rate.
QCD plasma parameters and the gauge dependent gluon propagator
TL;DR: The Ward identities that determine the gauge dependence of the QCD dispersion relations obtained from the ordinary gluon propagator in a certain class of gauges are derived and are found to hold for complex structure functions at both zero and finite temperature.
Susceptibilities and screening masses in two flavor QCD
TL;DR: In this article, the authors studied the susceptibilities of two flavors of dynamical staggered quarks at finite temperature, with a bare sea quark mass of about 17 MeV, and reported the first measurement of off-diagonal quark number susceptibilities below the transition temperature.