Inhomogeneous Quantum Quenches

摘要: We study the problem of a quantum quench in which initial state is ground an inhomogeneous hamiltonian, two different models, conformal field theory and ordinary free theory, are known to exhibit thermalisation finite regions homogeneous case. derive general expressions for evolution energy flow correlation functions, as well entanglement entropy Comparison results approaches regime their common validity shows agreement up point further discussed. Unlike thermal analogue, our non-diffusive can be physically interpreted using intuitive picture quasiparticles emitted from time hypersurface propagating semiclassically.