Quantum dynamics of thermalizing systems

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Roger Mong
University of Pittsburgh
Wednesday, August 9, 2017 - 2:00pm
402 Old LeConte Hall

Questions about how hydrodynamic behaviour emerges from microscopic quantum physics arise frequently in condensed matter physics. Such systems often have 'volume entanglement law' entropy, which makes them difficult to study using MPS approaches. We introduce a new method "DMT" for approximating density operators of 1D systems that, when combined with a standard framework for time evolution (TEBD), makes possible simulation of the dynamics of strongly thermalizing systems to arbitrary times. We demonstrate that the method performs well for both near-equilibrium initial states as well as far-from-equilibrium initial states.