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arxiv: 1512.00412 · v2 · pith:AFVZMGVBnew · submitted 2015-12-01 · 🪐 quant-ph · cond-mat.str-el· hep-lat

Real-Time Evolution of Strongly Coupled Fermions driven by Dissipation

classification 🪐 quant-ph cond-mat.str-elhep-lat
keywords evolutioncoupleddissipativedrivenfermionslatticelindbladlinear
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We consider the real-time evolution of a strongly coupled system of lattice fermions whose dynamics is driven entirely by dissipative Lindblad processes, with linear or quadratic quantum jump operators. The fermion 2-point functions obey a closed set of differential equations, which can be solved with linear algebra methods. The staggered occupation order parameter of the t-V model decreases exponentially during the dissipative time evolution. The structure factor associated with the various Fourier modes shows the slowing down of low-momentum modes, which is due to particle number conservation. The processes with nearest-neighbor-dependent Lindblad operators have a decay rate that is proportional to the coordination number of the spatial lattice.

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