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Application of conditional independence to gapped quantum many-body systems

January 28, 2013 - 10:00am
Speaker: 
Isaac Kim
Institution: 
Caltech

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.

Host:  David Abergel

2205 Physics Building
College Park, MD 20742