Energy gaps and interaction blockade in confined quantum systems

Capelle, K., Borgh, M. ORCID: https://orcid.org/0000-0003-4243-7051, Kärkkäinen, K. and Reimann, S. M. (2007) Energy gaps and interaction blockade in confined quantum systems. Physical Review Letters, 99 (1). ISSN 0031-9007

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Abstract

We investigate universal properties of strongly confined particles that turn out to be dramatically different from what is observed for electrons in atoms and molecules. For a large class of harmonically confined systems, such as small quantum dots and optically trapped atoms, many-body particle addition and removal energies, and energy gaps, are accurately obtained from single-particle eigenvalues. Transport blockade phenomena are related to the derivative discontinuity of the exchange-correlation functional. This implies that they occur very generally, with Coulomb blockade being a particular realization of a more general phenomenon. In particular, we predict a van der Waals blockade in cold atom gases in traps.

Item Type:	Article
Uncontrolled Keywords:	general physics and astronomy ,/dk/atira/pure/subjectarea/asjc/3100/3100
Related URLs:	https://www.scopus.com/pages/publication...
Depositing User:	LivePure Connector
Date Deposited:	01 Aug 2022 09:30
Last Modified:	18 Jun 2026 19:32
URI:	https://ueaeprints.uea.ac.uk/id/eprint/87013
DOI:	10.1103/PhysRevLett.99.010402

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