Adiabatic dynamics in open quantum critical many-body systems

D Patane, A Silva, L Amico, R Fazio, GE Santoro - Physical review letters, 2008 - APS
Physical review letters, 2008APS
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.
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.
American Physical Society
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