Extracting the condensate density from projection experiments with Fermi gases

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dc.creatorPerali, A.
dc.creatorPieri, P.
dc.creatorStrinati, G. C.
dc.date2005-01-26
dc.date2005-04-21
dc.date.accessioned2026-07-07T03:03:27Z
dc.date.available2026-07-07T03:03:27Z
dc.descriptionA debated issue in the physics of the BCS-BEC crossover with trapped Fermi atoms is to identify characteristic properties of the superfluid phase. Recently, a condensate fraction was measured on the BCS side of the crossover by sweeping the system in a fast (nonadiabatic) way from the BCS to the BEC sides, thus ``projecting'' the initial many-body state onto a molecular condensate. We analyze here the theoretical implications of these projection experiments, by identifying the appropriate quantum-mechanical operator associated with the measured quantities and relating them to the many-body correlations occurring in the BCS-BEC crossover. Calculations are presented over wide temperature and coupling ranges, by including pairing fluctuations on top of mean field.
dc.description4 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0501631
dc.identifierhttp://arxiv.org/abs/cond-mat/0501631
dc.identifierPhys. Rev. Lett. 95, 010407 (2005)
dc.identifierdoi:10.1103/PhysRevLett.95.010407
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/25755
dc.subjectSuperconductivity
dc.subjectOther Condensed Matter
dc.titleExtracting the condensate density from projection experiments with Fermi gases
dc.typetext

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