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Fakultät Physik

Effective Potential and Vacuum Stability in the Litim-Sannino Model

  • Hiller
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We revisit the scalar potential in the Litim-Sannino model. We compute for
the first time the full quantum corrections to the classical potential and show that they
significantly ameliorate the stability analysis at the UV fixed point. The quantum effective
potential is computed at two-loop order and the numerical precision is further improved
using resummations and parameter optimisations. As a result, we find a consistent widening
of the UV conformal window across various approximations.

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