3 papers
hep-th2025
Thermodynamics from the S-matrix reloaded: emergent thermal mass
Pietro Baratella, Joan Elias Miro
The formalism of Dashen, Ma and Bernstein (DMB) expresses the thermal partition function of a system in terms of the S-matrix operator, roughly $Z(β) \propto \int dE\, e^{-βE}\,\…
hep-ph2025
Functional Determinants for False Vacuum Decay
Pietro Baratella, Miha Nemevšek, Yutaro Shoji +2
We derive simple expressions to regularise functional determinants from fluctuations of fields with spin 0, 1/2, and 1. These are important for the precise dimensionful determinati…
hep-ph2024
Revising the full one-loop gauge prefactor in electroweak vacuum stability
Pietro Baratella, Miha Nemevšek, Yutaro Shoji +2
We revisit the decay rate of the electroweak vacuum in the Standard Model with the full one-loop prefactor. We focus on the gauge degrees of freedom and derive the degeneracy facto…