Nonequilibrium Green's function formalism and the problem of bound states

Dhar, Abhishek; Sen, Diptiman

Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/1211

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DC Field	Value	Language
dc.contributor.author	Dhar, Abhishek	-
dc.contributor.author	Sen, Diptiman	-
dc.date.accessioned	2006-05-12T10:50:56Z	-
dc.date.available	2006-05-12T10:50:56Z	-
dc.date.issued	2006-02-28	-
dc.identifier.citation	Physical Review B, 2006, Vol.73, 085119	en
dc.identifier.issn	1098-0121	-
dc.identifier.issn	1550-235X (online)	-
dc.identifier.uri	http://hdl.handle.net/2289/1211	-
dc.description.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.	en
dc.format.extent	440644 bytes	-
dc.format.mimetype	application/pdf	-
dc.language.iso	en	en
dc.publisher	The American Physical Society	en
dc.relation.uri	http://link.aps.org/abstract/PRB/v73/e085119	en
dc.relation.uri	http://arxiv.org/abs/cond-mat/0510303	-
dc.rights	(2006) by the American Physical Society	en
dc.title	Nonequilibrium Green's function formalism and the problem of bound states	en
dc.type	Article	en
Appears in Collections:	Research Papers (TP)

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