Anomalous Supersymmetry Breaking by Instantons
A. Casher, V. Elkonin, Y. Shamir
TL;DR
This paper demonstrates that instantons can cause anomalous supersymmetry breaking in certain models, due to infra-red divergences preventing a manifestly supersymmetric expansion.
Contribution
It reveals a novel mechanism of supersymmetry breaking via instantons that challenges the assumption of preserved supersymmetry in instanton sectors.
Findings
Instantons violate supersymmetric identities in specific models.
Infra-red divergences hinder a manifestly supersymmetric instanton expansion.
Supersymmetry breaking is linked to non-perturbative instanton effects.
Abstract
We show that instantons violate a supersymmetric identity in a classically supersymmetric Higgs model with no massless fermions. This anomalous breaking arises because the correct perturbative expansion in the instanton sector is not supersymmetric. The attempt to construct a manifestly supersymmetric expansion generates infra-red divergences.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · Black Holes and Theoretical Physics · Quantum Chromodynamics and Particle Interactions