Tuesday, July 16, 2013

1307.3738 (Matteo Marcuzzi et al.)

Pre-thermalization in a non-integrable quantum spin chain after a quench    [PDF]

Matteo Marcuzzi, Jamir Marino, Andrea Gambassi, Alessandro Silva
We study the dynamics of a quantum Ising chain after the sudden introduction of a non-integrable long-range interaction. Via an exact mapping onto a fully-connected lattice of hard-core bosons, we show that a pre-thermal state emerges and we investigate its properties by focusing on a class of physically relevant observables. We show that some features of this quasi-stationary state are captured by perturbation theory and that the corrections to the statistical distribution function are unexpectedly independent of the interaction strength, whereas actual observables are perturbatively modified.
View original: http://arxiv.org/abs/1307.3738

No comments:

Post a Comment