2008/12/19 by Dario Patanè, Alessandro Silva, Luigi Amico +2 · 1 citation
Physics and Astronomy · #cond-mat.stat-mech
published as Phys. Rev. B 80, 024302 (2009) · 15 pages, 13 figures
arxiv created 2008/12/19 · arxiv updated 2009/12/01
We study the dynamics of open quantum many-body systems driven across a critical point by quenching an Hamiltonian parameter at a certain velocity. General scaling laws are derived for the density of excitations and energy produced during the quench as a function of quench velocity and bath temperature. The scaling laws and their regimes of validity are verified for the XY spin chain locally coupled to bosonic baths. A detailed derivation and analysis of the kinetic equation of the problem is presented.