Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2003-04-15
Phys.Rev. D68 (2003) 065015
Physics
High Energy Physics
High Energy Physics - Phenomenology
25 pages, 6 figures, 1 reference added, minor corrections in text, errors in Sec. 3.2 corrected, PRD version
Scientific paper
10.1103/PhysRevD.68.065015
It is proposed that the cooling of a thermalized SU($N$) gauge theory can be formulated in terms of a cascade involving three effective theories with successively reduced (and spontaneously broken) gauge symmetries, SU($N$) $\to$ U(1)$^{N-1}$ $\to$ Z$_N$. The approach is based on the assumption that away from a phase transition the bulk of the quantum interaction inherent to the system is implicitly encoded in the (incomplete) classical dynamics of a collective part made of low-energy condensed degrees of freedom. The properties of (some of the) statistically fluctuating fields are determined by these condensate(s). This leads to a quasi-particle description at tree-level. It appears that radiative corrections, which are sizable at large gauge coupling, do not change the tree-level picture qualitatively. The thermodynamic self-consistency of the quasi-particle approach implies nonperturbative evolution equations for the associated masses. The temperature dependence of these masses, in turn, determine the evolution of the gauge coupling(s). The hot gauge system approaches the behavior of an ideal gas of massless gluons at asymptotically large temperature. A negative equation of state is possible at a stage where the system is about to settle into the phase of the (spontaneously broken) Z$_N$ symmetry.
No associations
LandOfFree
Thermodynamic gauge-theory cascade does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Thermodynamic gauge-theory cascade, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thermodynamic gauge-theory cascade will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-608335