2 papers
hep-th2021
U(1) symmetry resolved entanglement in free 1+1 dimensional field theories via form factor bootstrap
David X. Horvath, Luca Capizzi, Pasquale Calabrese
We generalise the form factor bootstrap approach to integrable field theories with U(1) symmetry to derive matrix elements of composite branch-point twist fields associated with sy…
cond-mat.stat-mech2020
Symmetry resolved entanglement entropy of excited states in a CFT
Luca Capizzi, Paola Ruggiero, Pasquale Calabrese
We report a throughout analysis of the entanglement entropies related to different symmetry sectors in the low-lying primary excited states of a conformal field theory (CFT) with a…