Lieb-Robinson bounds, the spectral flow, and stability of the spectral gap for lattice fermion systems

Bruno Nachtergaele, Robert Sims, Amanda Young

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We prove Lieb-Robinson bounds for a general class of lattice fermion systems. By making use of a suitable conditional expectation onto subalgebras of the CAR algebra, we can apply the Lieb-Robinson bounds much in the same way as for quantum spin systems. We preview how to obtain the spectral flow automorphisms and to prove stability of the spectral gap for frustration-free gapped systems satisfying a Local Topological Quantum Order condition.

Original languageEnglish (US)
Title of host publicationMathematical Problems in Quantum Physics
EditorsFederico Bonetto, David Borthwick, Evans Harrell, Michael Loss
PublisherAmerican Mathematical Society
Pages93-115
Number of pages23
ISBN (Electronic)9781470449391
ISBN (Print)9781470436810
DOIs
StatePublished - 2018
Externally publishedYes

Publication series

NameContemporary Mathematics
Volume717
ISSN (Print)0271-4132
ISSN (Electronic)1098-3627

ASJC Scopus subject areas

  • General Mathematics

Fingerprint

Dive into the research topics of 'Lieb-Robinson bounds, the spectral flow, and stability of the spectral gap for lattice fermion systems'. Together they form a unique fingerprint.

Cite this