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EnglishWe study the dissipative dynamics of Nquantum spins with Lindblad generator consisting of operators scaling as fluctuations, namely with the inverse square-root of N. In the large Nlimit, the microscopic dissipative time-evolution converges to a non-Markovian unitary dynamics on strictly local operators, while at the mesoscopic level of fluctuations it gives rise to a dissipative non-Markovian dynamics. The mesoscopic time-evolution is Gaussian and exhibits either a stable or an unstable asymptotic character; furthermore, the mesoscopic dynamics builds correlations among fluctuations that survive in time even when the original microscopic dynamics is unable to correlate local observables.
| Titolo: | Non-markovian mesoscopic dissipative dynamics of open quantum spin chains |
| Autori: | |
| Data di pubblicazione: | 2016 |
| Rivista: | |
| Abstract: | We study the dissipative dynamics of Nquantum spins with Lindblad generator consisting of operators scaling as fluctuations, namely with the inverse square-root of N. In the large Nlimit, the microscopic dissipative time-evolution converges to a non-Markovian unitary dynamics on strictly local operators, while at the mesoscopic level of fluctuations it gives rise to a dissipative non-Markovian dynamics. The mesoscopic time-evolution is Gaussian and exhibits either a stable or an unstable asymptotic character; furthermore, the mesoscopic dynamics builds correlations among fluctuations that survive in time even when the original microscopic dynamics is unable to correlate local observables. |
| Handle: | http://hdl.handle.net/11368/2895716 |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1016/j.physleta.2015.10.062 |
| URL: | http://www.sciencedirect.com/science/article/pii/S0375960115009536 |
| Appare nelle tipologie: | 1.1 Articolo in Rivista |
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http://hdl.handle.net/11368/2895716
