An Effective Model for Hot Gluodynamics

Details An Effective Model for Hot Gluodynamics An Effective Model for Hot Gluodynamics

1998-12-05

arxiv.org/abs/nucl-th/9812014v2

Phys.Rev. C61 (2000) 045206

Physics

Nuclear Physics

Nuclear Theory

Contains an expanded discussion of the results. To be published in Phys. Rev. C. 10 pages latex, 6 postscript figures

Scientific paper

10.1103/PhysRevC.61.045206

We consider an effective Lagrangian containing contributions from glueball and gluon degrees of freedom with a scale-invariant coupling between the two. The thermodynamic potential is calculated taking into account thermal fluctuations of both fields. The glueball mean field dominates at low temperature, while the high temperature phase is governed by low-mass gluon-like excitations. The model shows some similarities to the lattice results in the pure glue sector of QCD. In particular, it exhibits a strong first order phase transition at a critical temperature of approximately 265 MeV when reasonable parameters are taken.

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