Dissipative flow equations
Lorenzo RossoPolytechnic University of TurinFernando IeminiAbdus Salam International Centre for Theoretical PhysicsMarco SchiròCollège de FranceLeonardo MazzaUniversity of Paris-Saclay
ABI
Abstract
We generalize the theory of flow equations to open quantum systems focusing on Lindblad master equations. We introduce and discuss three different generators of the flow that transform a linear non-Hermitian operator into a diagonal one. We first test our dissipative flow equations on a generic matrix and on a physical problem with a driven-dissipative single fermionic mode. We then move to problems with many fermionic modes and discuss the interplay between coherent (disordered) dynamics and localized losses. Our method can also be applied to non-Hermitian Hamiltonians.
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