Real-time simulation of large open quantum spin systems driven by dissipation

Banerjee, Debasish; Jiang, F.-J.; Kon, M.; Wiese, Uwe-Jens (2014). Real-time simulation of large open quantum spin systems driven by dissipation. Physical review. B - condensed matter and materials physics, 90(24) American Physical Society 10.1103/PhysRevB.90.241104

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We consider a large quantum system with spins 12 whose dynamics is driven entirely by measurements of the total spin of spin pairs. This gives rise to a dissipative coupling to the environment. When one averages over the measurement results, the corresponding real-time path integral does not suffer from a sign problem. Using an efficient cluster algorithm, we study the real-time evolution from an initial antiferromagnetic state of the two-dimensional Heisenberg model, which is driven to a disordered phase, not by a Hamiltonian, but by sporadic measurements or by continuous Lindblad evolution.

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 and Wiese, Uwe-Jens

Subjects:

500 Science > 530 Physics

ISSN:

1098-0121

Publisher:

American Physical Society

Language:

English

Submitter:

Esther Fiechter

Date Deposited:

22 Dec 2014 16:42

Last Modified:

05 Feb 2016 12:16

Publisher DOI:

10.1103/PhysRevB.90.241104

BORIS DOI:

10.7892/boris.61271

URI:

https://boris.unibe.ch/id/eprint/61271

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