Fluctuations and stochastic processes in one-dimensional many-body quantum systems.
نویسندگان
چکیده
We study the fluctuation properties of a one-dimensional many-body quantum system composed of interacting bosons and investigate the regimes where quantum noise or, respectively, thermal excitations are dominant. For the latter, we develop a semiclassical description of the fluctuation properties based on the Ornstein-Uhlenbeck stochastic process. As an illustration, we analyze the phase correlation functions and the full statistical distributions of the interference between two one-dimensional systems, either independent or tunnel-coupled, and compare with the Luttinger-liquid theory.
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عنوان ژورنال:
- Physical review letters
دوره 105 1 شماره
صفحات -
تاریخ انتشار 2010