John Cardy
Published 2010-12-22, updated 2011-03-22Version 2
We show that block entanglement entropies in one-dimensional systems close to a quantum critical point can in principle be measured in terms of the population of low-lying energy levels following a certain type of local quantum quench.
Comments: 5 pages, 2 figures. v2: references added, minor text changes
Journal: Phys.Rev.Lett.106:150404,2011
Quantum Quenches, Thermalization and Many-Body Localization
Quantum quenches with random matrix Hamiltonians and disordered potentials
Quantum quenches from an excited state
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