Rényi entanglement entropies of descendant states in critical systems with boundaries: conformal field theory and spin chains

Luca Taddia, Fabio Ortolani, Tamás Pálmai

Published 2016-06-08Version 1

We discuss the R\'enyi entanglement entropies of descendant states in critical one-dimensional systems with boundaries, that map to boundary conformal field theories (CFT) in the scaling limit. We unify the previous CFT approaches to describe primary and descendant states in systems with both open and closed boundaries. We apply the technique to critical systems belonging to different universality classes with non-trivial boundary conditions that preserve conformal invariance, and compare the results to numerical data obtained on finite spin chains.