Higgs and Effective Field Theory - HEFT 2025

Session

Cosmology

5 Jun 2025, 09:00

503/1-001 - Council Chamber (CERN)

Conveners

Cosmology

• Mikael Chala (Universidad de Granada)

60. Gravitational Self-Force from Amplitudes and Effective Field Theory

Dimitrios Kosmopoulos

05/06/2025, 09:00

15. Higher-order-operator corrections to phase transitions in dimensionally reduced EFTs

Luis Gil (Universidad de Granada)

05/06/2025, 09:30

The potential observation of a gravitational wave background compatible with a first-order phase transition (FOPT) would be a striking signature of BSM physics. In order to be able to reconstruct the underlying fundamental model, however, it is crucial to increase the precision of theoretical predictions from the thermal QFT side.

The usual approach to the computation of FOPT parameters is...

21. Higher-dimensional operators at finite-temperature affect gravitational-wave predictions

Philipp Schicho (University of Geneva)

05/06/2025, 09:50

We investigate the effect of higher-dimensional marginal operators on the thermodynamics of cosmological phase transitions. Focusing on the Abelian Higgs model, we systematically match these operators, which arise at higher orders in the underlying high-temperature expansion of thermal effective field theory, and use field redefinitions to construct a complete, minimal, and gauge-invariant...

49. RG Improvement of the Scalar Effective Potential in Finite Temperature Quantum Field Theory

Andrija Rasovic

05/06/2025, 10:10

Its been demonstrated that "optimized partial dressing" (OPD) thermal mass resummation, which uses gap equation solutions inserted into the tadpole, efficiently tames finite temperature perturbation theory calculations of the effective thermal potential, without necessitating use of the high-temperature approximation. Even though it was shown that OPD has a similar scale dependence as 3D EFT...