Relaxation of a quantum many-body system from a correlated initial state. A general and consistent approach

DOI: 10.1002/CTPP.200310037

关键词:

摘要: Various approaches to a theoretical treatment of the dynamics quantum many-body systems starting from correlated initial state are discussed. In particular, we compare concept BBGKY-hierarchy (single-time reduced density operators) and that nonequilibrium Green's functions (two-time correlation functions). Conditions for physically meaningful correlations established.