Supersymmetry-Breaking Nonlinear Sigma Models

TL;DR

This paper introduces a new class of supersymmetric nonlinear sigma models in four dimensions that unify internal symmetry breaking with spontaneous supersymmetry breaking, resulting in unique massless and massive modes.

Contribution

It proposes novel constraints on chiral superfields to achieve models with exclusive Nambu-Goldstone bosons and a charged goldstino, linking internal and supersymmetry breaking.

Findings

Massless modes are solely Nambu-Goldstone bosons.

Goldstino is charged under the internal symmetry.

Massive modes exhibit unique mass relations.

Abstract

We consider a novel class of constraints on chiral superfields to obtain supersymmetric nonlinear sigma models in four spacetime dimensions, which strictly combine the internal symmetry breaking with spontaneous supersymmetry breaking. The resultant massless modes can be exclusively Nambu-Goldstone bosons without their complex partners and the goldstino that is charged under the internal symmetry. The massive modes show a peculiar relation among their masses and the scales of symmetry breakings.