Real-Time Simulation of Large Open Quantum Spin Systems driven by Measurements

Autor:	Banerjee, D., Jiang, F. -J., Kon, M., Wiese, U. -J.
Rok vydání:	2014
Předmět:	Condensed Matter - Strongly Correlated Electrons High Energy Physics - Lattice Quantum Physics
Zdroj:	Phys. Rev. B 90, 241104 (2014)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevB.90.241104
Popis:	We consider a large quantum system with spins $\frac{1}{2}$ 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 of a 2-d Heisenberg antiferromagnet, which is driven to a disordered phase, either by sporadic measurements or by continuous monitoring described by Lindblad evolution. Comment: 5 pages, 7 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1405.7882 Zobrazit plný text záznamu View this record from Arxiv