Non-adiabatic quantum effects from a Standard Model time-dependent Higgs vev

TL;DR

This paper investigates how the time-dependent Higgs vev in the Standard Model causes non-adiabatic, non-perturbative production of particles, affecting the Higgs dynamics and particle phenomenology.

Contribution

It provides a detailed analysis of non-adiabatic particle production from a time-varying Higgs vev using the Hartree approximation and numerical solutions.

Findings

Non-perturbative particle production occurs during Higgs vev oscillations.

Back-reaction effects influence the Higgs field dynamics.

Numerical results relevant for Standard Model phenomenology.

Abstract

We consider the time-dependence of the Higgs vacuum expectation value (vev) given by the dynamics of the Standard Model and study the non-adiabatic production of both bosons and fermions, which is intrinsically non-perturbative. In the Hartree approximation, we analyse the general expressions that describe the dissipative dynamics due to the back-reaction of the produced particles. In particular, we solve numerically some relevant cases for the Standard Model phenomenology in the regime of relatively small oscillations of the Higgs vev.