Renormalization in Quantum Statistics of Systems with Spontaneous Symmetry Breaking
arXiv:hep-th/9309122 · doi:10.1016/0370-2693(94)01263-C
Abstract
Renormalization in quantum statistics in the presence of a charge associated to a spontaneously broken symmetry is discussed for the scalar field model. In contrast to the case of non-broken symmetry, the renormalization mass counterterm depends on the chemical potential. We argue that this is connected to the ill-defined character of the charge operator.
7 pages (plain TeX), HU-SEFT R 1993-8. (Offending bold greek removed)