ON THE FINITE-TEMPERATURE EFFECTIVE POTENTIAL IN SCALAR QED WITH N-FLAVORS

被引：2
作者：
CARENA, M
WAGNER, CEM
机构：
[1] Max Planck Institut für Physik, Werner Heisenberg Institut, W-8000 Munich 40
来源：
NUCLEAR PHYSICS B | 1993年 / 407卷 / 03期
关键词：
D O I：
10.1016/0550-3213(93)90092-4
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
The effective potential of scalar quantum electrodynamics with N flavors of complex scalar fields is studied, by performing a self-consistent 1/N expansion up to next to leading order in 1/N. Starting from the broken phase at zero temperature, the theory exhibits a phase transition to the symmetric phase at some finite temperature T(c). We work in general covariant gauges and demonstrate the gauge invariance of both, the critical temperature T(c) and the minimization condition at any finite temperature T. Furthermore, the only minimum of the potential is at zero scalar vacuum expectation value for any temperature T greater-than-or-equal-to T(c) and varies continuously to nonzero values for temperatures below T(c), implying the existence of a second-order phase transition.
引用
收藏
页码：606 / 634
页数：29
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