Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2008-05-24
Physics
Condensed Matter
Strongly Correlated Electrons
17 pages, 7 figures, RevTex4; few typos corrected, a figure modified
Scientific paper
10.1103/PhysRevB.78.165105
The dynamics of a many-body system coupled to an external environment represents a fundamentally important problem. To this class of open quantum systems pertains the study of energy transport and dissipation, dephasing, quantum measurement and quantum information theory, phase transitions driven by dissipative effects, etc. Here, we discuss in detail an extension of time-dependent current-density-functional theory (TDCDFT), we named stochastic TDCDFT [Phys. Rev. Lett. {\bf 98}, 226403 (2007)], that allows the description of such problems from a microscopic point of view. We discuss the assumptions of the theory, its relation to a density matrix formalism, and the limitations of the latter in the present context. In addition, we describe a numerically convenient way to solve the corresponding equations of motion, and apply this theory to the dynamics of a 1D gas of excited bosons confined in a harmonic potential and in contact with an external bath.
D'Agosta Roberto
Ventra Massimiliano Di
No associations
LandOfFree
Stochastic time-dependent current-density functional theory: a functional theory of open quantum systems does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Stochastic time-dependent current-density functional theory: a functional theory of open quantum systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stochastic time-dependent current-density functional theory: a functional theory of open quantum systems will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-665530