Please use this identifier to cite or link to this item:
http://hdl.handle.net/2289/1211
Title: | Nonequilibrium Green's function formalism and the problem of bound states |
Authors: | Dhar, Abhishek Sen, Diptiman |
Issue Date: | 28-Feb-2006 |
Publisher: | The American Physical Society |
Citation: | Physical Review B, 2006, Vol.73, 085119 |
Abstract: | The nonequilibrium Green's function formalism for infinitely extended reservoirs coupled to a finite system can be derived by solving the equations of motion for a tight-binding Hamiltonian. While this approach gives the correct density for the continuum states, we find that it does not lead, in the absence of any additional mechanisms for equilibration, to a unique expression for the density matrix of any bound states which may be present. Introducing some auxiliary reservoirs which are very weakly coupled to the system leads to a density matrix which is unique in the equilibrium situation, but which depends on the details of the auxiliary reservoirs in the nonequilibrium case. |
URI: | http://hdl.handle.net/2289/1211 |
ISSN: | 1098-0121 1550-235X (online) |
Alternative Location: | http://link.aps.org/abstract/PRB/v73/e085119 http://arxiv.org/abs/cond-mat/0510303 |
Copyright: | (2006) by the American Physical Society |
Appears in Collections: | Research Papers (TP) |
Files in This Item:
File | Description | Size | Format | |
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2006 PRB V73 p085119.pdf | Open Access | 430.32 kB | Adobe PDF | View/Open |
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