Evolution of entanglement entropy in one-dimensional systems

@inproceedings{Calabrese2005EvolutionOE,
  title={Evolution of entanglement entropy in one-dimensional systems},
  author={Pasquale Calabrese and John L. Cardy},
  year={2005}
}
We study the unitary time evolution of the entropy of entanglement of a one-dimensional system between the degrees of freedom in an interval of length and its complement, starting from a pure state which is not an eigenstate of the Hamiltonian. We use path integral methods of quantum field theory as well as explicit computations for the transverse Ising spin chain. In both cases, there is a maximum speed v of propagation of signals. In general the entanglement entropy increases linearly with… CONTINUE READING

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