Spontaneous N=2 --> N=1 local supersymmetry breaking with surviving local gauge group

TL;DR

This paper demonstrates generic partial breaking of N=2 supersymmetry to N=1 in supergravity models, maintaining zero vacuum energy and unbroken gauge groups, with illustrative examples.

Contribution

It introduces a general framework for partial supersymmetry breaking in N=2 supergravity with preserved gauge symmetry and zero vacuum energy, supported by explicit examples.

Findings

Partial supersymmetry breaking from N=2 to N=1 achieved.

Zero vacuum energy maintained during breaking.

Unbroken gauge groups can survive the breaking process.

Abstract

Generic partial supersymmetry breaking of $N=2$ supergravity with zero vacuum energy and with surviving unbroken arbitrary gauge groups is exhibited. Specific examples are given.