2008/05/31 by Dario Patanè, Alessandro Silva, Luigi Amico +2 · 2 citations
Physics and Astronomy · #cond-mat.stat-mech #cond-mat.other
paper · pdf · doi:10.1103/physrevlett.101.175701
published as Phys. Rev. Lett. 101, 175701 (2008) · 4 pages, 4 figures; revised version to be published in Phys. Rev. Lett
arxiv created 2008/10/03 · arxiv updated 2009/12/01
The purpose of this work is to understand the effect of an external environment on the adiabatic dynamics of a quantum critical system. By means of scaling arguments we derive a general expression for the density of excitations produced in the quench as a function of its velocity and of the temperature of the bath. We corroborate the scaling analysis by explicitly solving the case of a one-dimensional quantum Ising model coupled to an Ohmic bath.