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Published on: July 2, 2018
Dissipative dynamics of an extended magnetic nanostructure: spin necklace in a metallic environment
1Center for Materials Theory, Department of Physics & Astronomy, Rutgers University, 136 Frelinghuysen Road, Piscataway, New Jersey 08854, USA.
Abstract:
We study theoretically the dynamics of an "xxz" spin necklace coupled to a conduction electron sea, a model system for a nanostructure in a dissipative environment. We extract the long-time behavior via a mapping to a multichannel Coulomb gas problem followed by a scaling analysis. The strong quantum fluctuations of the necklace cause a nontrivial dependence of couplings on system size which we extract via an analysis involving the "boundary condition changing operator," and confirm via a detailed numerical evaluation of one case.
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