Efficient variational approach to dynamics of a spatially extended bosonic Kondo model

Volume: 100, Issue: 4
Published: Oct 31, 2019
Abstract
We develop an efficient variational approach to studying dynamics of a localized quantum spin coupled to a bath of mobile spinful bosons. We use parity symmetry to decouple the impurity spin from the environment via a canonical transformation and reduce the problem to a model of the interacting bosonic bath. We describe coherent time evolution of the latter using bosonic Gaussian states as a variational ansatz. We provide full analytical...
Paper Details
Title
Efficient variational approach to dynamics of a spatially extended bosonic Kondo model
Published Date
Oct 31, 2019
Volume
100
Issue
4
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