# Real scalar phase transitions: a nonperturbative analysis

@article{Gould2021RealSP, title={Real scalar phase transitions: a nonperturbative analysis}, author={Oliver Gould}, journal={Journal of High Energy Physics}, year={2021}, volume={2021}, pages={1-50} }

We study the thermal phase transitions of a generic real scalar field, without a Z2-symmetry, referred to variously as an inert, sterile or singlet scalar, or ϕ3 + ϕ4 theory. Such a scalar field arises in a wide range of models, including as the inflaton, or as a portal to the dark sector. At high temperatures, we perform dimensional reduction, matching to an effective theory in three dimensions, which we then study both perturbatively to three-loop order and on the lattice. For strong first… Expand

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