Landscape Implications of Extended Higgs Models

TL;DR

This paper explores how extended Higgs models, especially those consistent with electroweak symmetry breaking in supersymmetric limits, influence the universe's stability and the nature of future phase transitions.

Contribution

It identifies specific extended Higgs models that maintain electroweak symmetry breaking in the supersymmetric limit and discusses their cosmological implications.

Findings

Certain extended Higgs models support EWSB in the susy limit.

Implications for universe stability and phase transition energetics are analyzed.

LHC Higgs sector observations could inform future universe scenarios.

Abstract

From several points of view it is strongly suggested that the current universe is unstable and will ultimately decay to one that is exactly supersymmetric (susy). The possibility that atoms and molecules form in this future universe requires that the degenerate electron/selectron mass is non-zero and hence that electroweak symmetry breaking (EWSB) survives the phase transition to exact susy. However, the minimal supersymmetric standard model (MSSM) and several of its extensions have no EWSB in the susy limit. Among the extended higgs models that have been discussed one stands out in this regard. The higgs sector that is revealed at the Large Hadron Collider (LHC) will therefore have implications for the future universe. We also address the question as to whether the transition to the exact susy phase with EWSB is exothermic.