Thermal versus quantum fluctuations of optical-lattice fermions

dc.contributorVirginia Techen
dc.contributor.authorCampo, V. L. Jr.en
dc.contributor.authorCapelle, K.en
dc.contributor.authorHooley, C.en
dc.contributor.authorQuintanilla, J.en
dc.contributor.authorScarola, Vito W.en
dc.contributor.departmentPhysicsen
dc.date.accessed2013-12-18en
dc.date.accessioned2014-01-03T16:01:24Zen
dc.date.available2014-01-03T16:01:24Zen
dc.date.issued2012-03-29en
dc.description.abstractWe show that, for fermionic atoms in a one-dimensional optical lattice, the fraction of atoms in doubly occupied sites is a highly nonmonotonic function of temperature. We demonstrate that this property persists even in the presence of realistic harmonic confinement, and that it leads to a suppression of entropy at intermediate temperatures that offers a route to adiabatic cooling. Our interpretation of the suppression is that such intermediate temperatures are simultaneously too high for quantum coherence and too low for significant thermal excitation of double occupancy thus offering a clear indicator of the onset of quantum fluctuations.en
dc.description.sponsorshipJeffress Memorial Trust_J-992en
dc.description.sponsorshipAFOSR FA9550-11-1-0313en
dc.description.sponsorshipDefense Advanced Research Projects Agency (DARPA) N66001-11-1-4122en
dc.description.sponsorshipScience and Technology Facilities Council (STFC)en
dc.description.sponsorshipSouth East Physics Network (SEPnet)en
dc.description.sponsorshipUniversity of Kenten
dc.description.sponsorshipBrazilian agency CNPqen
dc.identifier.citationCampo, V. L., Jr. ; Capelle, K. ; Hooley, C. ; et al., Mar 29, 2012. “Thermal versus quantum fluctuations of optical-lattice fermions,” PHYSICAL REVIEW A 85(3): 033644. DOI: 10.1103/PhysRevA.85.033644en
dc.identifier.doihttps://doi.org/10.1103/PhysRevA.85.033644en
dc.identifier.issn1050-2947en
dc.identifier.urihttp://hdl.handle.net/10919/24779en
dc.identifier.urlhttp://link.aps.org/doi/10.1103/PhysRevA.85.033644en
dc.language.isoen_USen
dc.publisherAmerican Physical Societyen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectmott insulatoren
dc.subjecthubbard-modelen
dc.subjectphysicsen
dc.subjectgasesen
dc.titleThermal versus quantum fluctuations of optical-lattice fermionsen
dc.title.serialPhysical Review Aen
dc.typeArticle - Refereeden
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