Abstract
The canonical statistics describes the statistical properties of an open system by assuming its coupling with the heat bath is infinitesimal in comparison with the total energy in thermodynamic limit. In this paper, we generally derive a noncanonical density matrix for the open system with a finite coupling to the heat bath, which deforms the energy shell to effectively modify the conventional canonical way. The obtained noncanonical distribution reflects the back action of system on the bath and thus depicts the statistical correlations between two subsystems by the mutual information as a result of energy conservation.
| Original language | English |
|---|---|
| Article number | 062125 |
| Journal | Physical Review E - Statistical, Nonlinear, and Soft Matter Physics |
| Volume | 90 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 17 Dec 2014 |
| Externally published | Yes |
Access to Document
Other files and links
Fingerprint
Dive into the research topics of 'Noncanonical statistics of a finite quantum system with non-negligible system-bath coupling'. Together they form a unique fingerprint.Cite this
Xu, D. Z., Li, S. W., Liu, X. F., & Sun, C. P. (2014). Noncanonical statistics of a finite quantum system with non-negligible system-bath coupling. Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, 90(6), Article 062125. https://doi.org/10.1103/PhysRevE.90.062125