One-loop inert and pseudo-inert minima

TL;DR

This paper investigates the differences between inert and pseudo-inert vacua in the two-Higgs-doublet model, analyzing their properties at tree-level and one-loop, revealing regions where both minima coexist beyond tree-level predictions.

Contribution

It provides a detailed comparison of inert and pseudo-inert minima at one-loop, highlighting cases where coexistence occurs outside tree-level constraints.

Findings

Both minima can coexist in parameter regions forbidden at tree-level.

Tree-level formulas for potential depth differences are not always valid at one-loop.

One-loop analysis reveals new regions of vacuum stability.

Abstract

We analyse the differences between inert and pseudo-inert vacua in the 2HDM, both at tree-level and one-loop. The validity of tree-level formulae for the relative depth of the potential at both minima is studied. The one-loop analysis shows both minima can coexist in regions of parameter space forbidden at tree-level.