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PERIMETER INSTITUTE RECORDED SEMINAR ARCHIVE

PIRSA:12120035  ( MP4 Medium Res , MP4 Low Res , MP3 , PDF ) Which Format?
Application of conditional independence to gapped quantum many-body systems
Speaker(s): Isaac Kim
Abstract: It is widely known in the quantum information community that the states that satisfy strong subadditivity of entropy with equality have the form of quantum Markov chain. Based on a recent strengthening of strong subadditivity of entropy, I will describe how such structure can be exploited in the studies of gapped quantum many-body system. In particular, I will describe a diagrammatic trick to i) give a quantitative statement about the locality of entanglement spectrum ii) perturbatively bound changes of topological entanglement entropy under generic perturbation.
Date: 12/12/2012 - 4:00 pm
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