JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT 093106 2017年9月 [査読有り]
It is a fundamental problem to characterize nonequilibrium processes. For a moving one-dimensional potential, we explore the nonequilibrium dynamics of the initial energy eigenstates for a confined quantum system interacting with a large reservoir...
It is known that each single typical pure state in an energy shell of a large isolated quantum system well represents a thermal equilibrium state of the system. We show that such typicality holds also for nonequilibrium steady states (NESS's). We ...
JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT 2016 054004 2016年5月 [査読有り]
For isolated quantum many-body systems, we extend the availability of the intrinsic thermal nature of typical pure states to a class of nonequilibrium processes which start from an initial equilibrium. For concreteness, we calculate the spectral d...
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 85(4) 044003 2016年4月 [査読有り]
We address the issue of the characterization of the nonequilibrium states for the time-dependent processes of a system interacting with a large reservoir, which is initially prepared in an equilibrium state. During the time evolution, we apply an ...
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 83(9) 094001 2014年9月
We show that it is possible to calculate equilibrium expectation values of many-body correlated quantities such as the characteristic functions and probability distributions with the use of only a single typical pure state. It also means that we c...