Aether SUSY breaking: Can aether be alternative to F-term SUSY breaking?

TL;DR

This paper explores models where spontaneous breaking of SUSY and Lorentz symmetry occurs via scalar or vector condensates, proposing an alternative to traditional F-term SUSY breaking with potential cosmological implications.

Contribution

It introduces a vector condensation model as a viable alternative to scalar fluid models for SUSY and Lorentz breaking, addressing previous issues and analyzing phenomenological constraints.

Findings

Vector condensation avoids issues of scalar fluid models.

Accelerated expansion and soft SUSY breaking are achievable.

Soft SUSY breaking is constrained to below ~100 TeV.

Abstract

We investigate supersymmetry (SUSY) breaking scenarios where both SUSY and Lorentz symmetry are broken spontaneously. For concreteness, we propose models in which scalar fluid or vector condensation breaks Lorentz symmetry and accordingly SUSY. Then, we examine whether such scenarios are viable for realistic model buildings. We find, however, that the scalar fluid model suffers from several issues. Then, we extend it to a vector condensation model, which avoids the issues in the scalar fluid case. We show that accelerated expansion and soft SUSY breaking in matter sector can be achieved. In our simple setup, the soft SUSY breaking is constrained to be less than $\mathcal{O}(100)$TeV from the constraints on modification of gravity.