Symmetry Non-restoration at High Temperature
Abstract
We discuss the (non)-restoration of global and local symmetries at high temperature. First, we analyze a two-scalar model with Z2 × Z2 symmetry using the exact renormalization group. We conclude that inverse symmetry breaking is possible in this kind of models within the perturbative regime. Regarding local symmetries, we consider the SU(2) U(1) gauge symmetry and focus on the case of a strongly interacting scalar sector. Employing a model-independent chiral Lagrangian we find indications of symmetry restoration.
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