Lindblad master equation approach to the dissipative quench dynamics of planar superconductors
Andrea Nava, Carmine Antonio Perroni, Reinhold Egger, Luca Lepori, Domenico Giuliano
DOI 10.1103/PhysRevB.108.245129 · Physical Review B
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Abstract
We employ the Lindblad master equation method to study the nonequilibrium dynamics following a parametric quench in the Hamiltonian of an open, two-dimensional superconducting system coupled to an external bath. Within our approach we show how, in the open system, the dissipation works as an effective stabilization mechanism in the time evolution of the system after the quench. Eventually, we evidence how the mismatch between the phases corresponding to the initial and to the final state of the system determines a dynamical phase transition between the two distinct phases. Our method allows for fully characterizing the dynamical phase transition in an open system in several cases of physical relevance, by means of a combined study of the time-dependent superconducting gap and of the fidelity between density matrices.
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