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arXiv · 1707.05185

Relaxation, thermalization and Markovian dynamics of two spins coupled to a spin bath

Hans De Raedt·Fengping Jin·Mikhail I. Katsnelson·Kristel Michielsen
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Abstract

It is shown that by fitting a Markovian quantum master equation to the numerical solution of the time-dependent Schrödinger equation of a system of two spin-1/2 particles interacting with a bath of up to 34 spin-1/2 particles, the former can describe the dynamics of the two-spin system rather well. The fitting procedure that yields this Markovian quantum master equation accounts for all non-Markovian effects in as much the general structure of this equation allows and yields a description that is incompatible with the Lindblad equation.

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Hans De Raedt, Fengping Jin, Mikhail I. Katsnelson, Kristel Michielsen. 2017-07-14. Relaxation, thermalization and Markovian dynamics of two spins coupled to a spin bath. https://doi.org/10.1103/physreve.96.053306

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