Lorentz-Violating Supergravity

TL;DR

This paper proposes a Lorentz-violating supergravity theory where superpartners exhibit exotic spins, challenging traditional Lorentz-invariant supersymmetry models and suggesting new phenomenological possibilities.

Contribution

It introduces a novel Lorentz-violating supergravity framework with unique superpartner properties not possible in standard theories.

Findings

Superpartners have unconventional spins, such as sfermions with spin 1/2.

Gauginos are described with spin 1, unlike in conventional models.

The theory is derived from a simple microscopic and statistical basis.

Abstract

The standard forms of supersymmetry and supergravity are inextricably wedded to Lorentz invariance. Here a Lorentz-violating form of supergravity is proposed. The superpartners have exotic properties that are not possible in a theory with exact Lorentz symmetry and microcausality. For example, the bosonic sfermions have spin 1/2 and the fermionic gauginos have spin 1. The theory is based on a phenomenological action that is shown to follow from a simple microscopic and statistical picture.