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PIRSA:19110111

Video URL

https://pirsa.org/19110111

Spectral gaps without frustration

Lemm, M. (2019). Spectral gaps without frustration. Perimeter Institute for Theoretical Physics. https://pirsa.org/19110111

Marius Lemm Harvard University

Talk numberPIRSA:19110111
DOI10.48660/19110111
Source RepositoryPIRSA
Collection
Talk Type Scientific Series
Subject

Abstract

In quantum spin systems, the existence of a spectral gap above the ground state has strong implications for the low-energy physics. We survey recent results establishing spectral gaps in various frustration-free spin systems by verifying finite-size criteria. The talk is based on collaborations with Abdul-Rahman, Lucia, Mozgunov, Nachtergaele, Sandvik, Yang, Young, and Wang.