Do mixtures of bosonic and fermionic atoms adiabatically heat up in optical lattices?

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dc.creatorCramer, M.
dc.creatorOspelkaus, S.
dc.creatorOspelkaus, C.
dc.creatorBongs, K.
dc.creatorSengstock, K.
dc.creatorEisert, J.
dc.date2007-07-24
dc.date.accessioned2026-07-07T09:38:55Z
dc.date.available2026-07-07T09:38:55Z
dc.descriptionMixtures of bosonic and fermionic atoms in optical lattices provide a promising arena to study strongly correlated systems. In experiments realizing such mixtures in the quantum degenerate regime the temperature is a key parameter. In this work, we investigate the intrinsic heating and cooling effects due to an entropy-preserving raising of the optical lattice potential. We analyze this process, identify the generic behavior valid for a wide range of parameters, and discuss it quantitatively for the recent experiments with 87Rb and 40K atoms. In the absence of a lattice, we treat the bosons in the Hartree-Fock-Bogoliubov-Popov-approximation, including the fermions in a self-consistent mean field interaction. In the presence of the full three-dimensional lattice, we use a strong coupling expansion. As a result of the presence of the fermions, the temperature of the mixture after the lattice ramp-up is always higher than for the pure bosonic case. This sheds light onto a key point in the analysis of recent experiments.
dc.description5 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/0707.3633
dc.identifierhttp://arxiv.org/abs/0707.3633
dc.identifierPhys. Rev. Lett. 100, 140409 (2008)
dc.identifierdoi:10.1103/PhysRevLett.100.140409
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/160988
dc.subjectStatistical Mechanics
dc.subjectQuantum Physics
dc.titleDo mixtures of bosonic and fermionic atoms adiabatically heat up in optical lattices?
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