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Discrete Holomorphicity at Two-Dimensional Critical Points
John Cardy
After a brief review of the historical role of analyticity in the study of critical phenomena, an account is given of recent discoveries of discretely holomorphic observables in cr…
Entanglement entropy and conformal field theory
Pasquale Calabrese, John Cardy
We review the conformal field theory approach to entanglement entropy. We show how to apply these methods to the calculation of the entanglement entropy of a single interval, and t…
Entanglement entropy of two disjoint intervals in conformal field theory
Pasquale Calabrese, John Cardy, Erik Tonni
We study the entanglement of two disjoint intervals in the conformal field theory of the Luttinger liquid (free compactified boson). Trρ_A^n for any integer n is calculated as the…
Quantum Quench from a Thermal Initial State
Spyros Sotiriadis, Pasquale Calabrese, John Cardy
We consider a quantum quench in a system of free bosons, starting from a thermal initial state. As in the case where the system is initially in the ground state, any finite subsyst…