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Renormalization in Quantum Statistics of Systems with Spontaneous Symmetry Breaking
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hep-th
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renormalizationsymmetrychargequantumstatisticsargueassociatedbreaking
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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.
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