Real-time simulation of nonequilibrium transport of magnetization in large open quantum spin systems driven by dissipation

Banerjee, Debasish; Hebenstreit, Florian; Jiang, F.-J.; Wiese, Uwe-Jens (2015). Real-time simulation of nonequilibrium transport of magnetization in large open quantum spin systems driven by dissipation. Physical review. B - condensed matter and materials physics, 92(12) American Physical Society 10.1103/PhysRevB.92.121104

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Using quantum Monte Carlo, we study the nonequilibrium transport of magnetization in large open strongly correlated quantum spin-12 systems driven by purely dissipative processes that conserve the uniform or staggered magnetization, disregarding unitary Hamiltonian dynamics. We prepare both a low-temperature Heisenberg ferromagnet and an antiferromagnet in two parts of the system that are initially isolated from each other. We then bring the two subsystems in contact and study their real-time dissipative dynamics for different geometries. The flow of the uniform or staggered magnetization from one part of the system to the other is described by a diffusion equation that can be derived analytically.

Item Type:

Journal Article (Original Article)

Division/Institute:

10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC)
08 Faculty of Science > Institute of Theoretical Physics

UniBE Contributor:

Banerjee, Debasish; Hebenstreit, Florian and Wiese, Uwe-Jens

Subjects:

500 Science > 530 Physics

ISSN:

1098-0121

Publisher:

American Physical Society

Language:

English

Submitter:

Esther Fiechter

Date Deposited:

24 Sep 2015 08:43

Last Modified:

24 Sep 2015 13:03

Publisher DOI:

10.1103/PhysRevB.92.121104

BORIS DOI:

10.7892/boris.71862

URI:

https://boris.unibe.ch/id/eprint/71862

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