Exactly Solvable Counting Statistics in Open Weakly Coupled Interacting Spin Systems
- 10 February 2014
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 112 (6), 067201
- https://doi.org/10.1103/physrevlett.112.067201
Abstract
We study the full counting statistics for interacting quantum many-body spin systems weakly coupled to the environment. In the leading order in the system-bath coupling, we derive exact spin current statistics for a large class of parity symmetric spin- systems driven by a pair of Markovian baths with local coupling operators. Interestingly, in this class of systems the leading-order current statistics are universal and do not depend on details of the Hamiltonian. Furthermore, in the specific case of a symmetrically boundary driven anisotropic Heisenberg () spin- chain, we explicitly derive the third-order nonlinear corrections to the current statistics. DOI: http://dx.doi.org/10.1103/PhysRevLett.112.067201 © 2014 American Physical Society
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