Improved hard-thermal-loop effective actions
高能物理 - 唯象学
2007-05-23 v1
摘要
Hard thermal loop effective actions furnish the building blocks of resummed thermal perturbation theory, which is expected to work as long as the quantities under consideration are not sensitive to the nonperturbative (chromo-)magnetostatic sector. A different breakdown of perturbation theory occurs whenever external momenta are light-like, because the hard thermal loops themselves develop collinear singularities. By additionally resumming asymptotic thermal masses for hard modes these singularities are removed while leaving the gauge invariance of the effective action intact.
引用
@article{arxiv.hep-ph/9707538,
title = {Improved hard-thermal-loop effective actions},
author = {A. Rebhan},
journal= {arXiv preprint arXiv:hep-ph/9707538},
year = {2007}
}
备注
14 pages, 5 figures, Latex using sprocl.sty and epsfig.sty. Invited talk given at SEWM '97, May 22--25, 1997, Eger, Hungary