On the perturbative expansion at high temperature and implications for cosmological phase transitions

@inproceedings{Gould2021OnTP,
  title={On the perturbative expansion at high temperature and implications for cosmological phase transitions},
  author={O. Gould and T. Tenkanen},
  year={2021}
}
We revisit the perturbative expansion at high temperature and investigate its convergence by inspecting the renormalisation scale dependence of the effective potential. Although at zero temperature the renormalisation group improved effective potential is scale independent at one-loop, we show how this breaks down at high temperature, due to the misalignment of loop and coupling expansions. Following this, we show how one can recover renormalisation scale independence at high temperature, and… Expand

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