Realization of supersymmetry and its spontaneous breaking in quantum Hall edges

TL;DR

This paper demonstrates the realization and spontaneous breaking of a simple supersymmetry at the edges of Moore-Read quantum Hall states, highlighting different phases and the role of Goldstino modes.

Contribution

It shows for the first time that an $ abla=(1,0)$ supersymmetry can be realized at quantum Hall edges and explores its spontaneous breaking depending on edge reconstruction.

Findings

SUSY can be realized at quantum Hall edges.

Both SUSY-preserving and SUSY-breaking phases are possible.

The Goldstino mode is significant in the SUSY broken phase.

Abstract

Supersymmetry (SUSY) relating bosons and fermions plays an important role in unifying different fundamental interactions in particle physics. Since no superpartners of elementary particles have been observed, SUSY, if present, must be broken at low-energy. This makes it important to understand how SUSY is realized and broken, and study their consequences. We show that an $\mathcal{N}=(1,0)$ SUSY, arguably the simplest type, can be realized at the edge of the Moore-Read quantum Hall state. Depending on the absence or presence of edge reconstruction, both SUSY-preserving and SUSY broken phases can be realized in the same system, allowing for their unified description. The significance of the gapless fermionic Goldstino mode in the SUSY broken phase is discussed.