TY - JOUR
T1 - Real-time simulation of large open quantum spin systems driven by dissipation
AU - Banerjee, D.
AU - Jiang, F. J.
AU - Kon, M.
AU - Wiese, U. J.
N1 - Publisher Copyright:
© 2014 American Physical Society.
PY - 2014/12/2
Y1 - 2014/12/2
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevB.90.241104
DO - 10.1103/PhysRevB.90.241104
M3 - Article
AN - SCOPUS:84916239675
SN - 1098-0121
VL - 90
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 24
M1 - 241104
ER -