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Entanglement Entropy in Extended Quantum Systems
John Cardy
After a brief introduction to the concept of entanglement in quantum systems, I apply these ideas to many-body systems and show that the von Neumann entropy is an effective way of…
Entanglement and correlation functions following a local quench: a conformal field theory approach
Pasquale Calabrese, John Cardy
We show that the dynamics resulting from preparing a one-dimensional quantum system in the ground state of two decoupled parts, then joined together and left to evolve unitarily wi…
Form factors of branch-point twist fields in quantum integrable models and entanglement entropy
J. L. Cardy, O. A. Castro-Alvaredo, B. Doyon
In this paper we compute the leading correction to the bipartite entanglement entropy at large sub-system size, in integrable quantum field theories with diagonal scattering matric…
SLE in the three-state Potts model - a numerical study
Adam Gamsa, John Cardy
The scaling limit of the spin cluster boundaries of the Ising model with domain wall boundary conditions is SLE with kappa=3. We hypothesise that the three-state Potts model with a…
Quantum Quenches in Extended Systems
Pasquale Calabrese, John Cardy
We study in general the time-evolution of correlation functions in a extended quantum system after the quench of a parameter in the hamiltonian. We show that correlation functions…