|Autor(en)||Markus Karl, Halil Cakir, Jad C. Halimeh, Markus K. Oberthaler, Michael Kastner and Thomas Gasenzer|
|Titel||Universal equilibrium scaling functions at short times after a quench|
|Keywords||Universal equilibrium scaling functions short times quench|
|Quelle||PHYSICAL REVIEW E 96 (2017) 022110|
By analyzing spin-spin correlation functions at relatively short distances, we show that equilibrium near-critical properties can be extracted at short times after quenches into the vicinity of a quantum critical point. The time scales after which equilibrium properties can be extracted are sufficiently short so that the proposed scheme should be viable for quantum simulators of spin models based on ultracold atoms or trapped ions. Our results, analytic as well as numeric, are for one-dimensional spin models, either integrable or nonintegrable, but we expect our conclusions to be valid in higher dimensions as well.