کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1863393 | 1037654 | 2016 | 9 صفحه PDF | دانلود رایگان |
• Mean-field dissipative dynamics.
• Quantum fluctuations.
• Quantum central limit theorem.
• Dynamics of mesoscopic correlations.
We study the dissipative dynamics of N quantum spins with Lindblad generator consisting of operators scaling as fluctuations, namely with the inverse square-root of N. In the large N limit, 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.
Journal: Physics Letters A - Volume 380, Issue 3, 28 January 2016, Pages 381–389