文档介绍：arXiv:hep-ph/9901312v1 14 Jan 1999
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1 The effective potential at zero temperature
The effective potential for quantum field theories was originally introduced
by Euler, Heisenberg and Schwinger 1, and applied to studies of spontaneous
symmetry breaking by Goldstone, Salam, Weinberg and Jona-Lasinio 2. Calcu-
lations of the effective potential were initially performed at one-loo