Equivalence of topological and scattering approaches to quantum pumping

Autor:	Braeunlich, G., Graf, G. M., Ortelli, G.
Rok vydání:	2009
Předmět:	Mathematical Physics Condensed Matter - Mesoscale and Nanoscale Physics 34L99 (Primary) 81Q10 (Secondary)
Druh dokumentu:	Working Paper
DOI:	10.1007/s00220-009-0983-1
Popis:	The Schroedinger equation with a potential periodically varying in time is used to model adiabatic quantum pumps. The systems considered may be either infinitely extended and gapped or finite and connected to gapless leads. Correspondingly, two descriptions of the transported charge, one relating to a Chern number and the other to a scattering matrix, have been available for some time. Here we generalize the first one and establish its equivalence to the second. Comment: LaTeX, 18 pages, replaced by version accepted for publication
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0902.4638 Zobrazit plný text záznamu View this record from Arxiv