Cooling dynamics of ultracold two-species Fermi-Bose mixtures

Details Cooling dynamics of ultracold two-species Fermi-Bose mixtures Cooling dynamics of ultracold two-species Fermi-Bose mixtures

2003-01-27

arxiv.org/abs/cond-mat/0301517v1

Phys. Rev. Lett. 90, 030404 (2003)

Physics

Condensed Matter

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.90.030404

We compare strategies for evaporative and sympathetic cooling of two-species Fermi-Bose mixtures in single-color and two-color optical dipole traps. We show that in the latter case a large heat capacity of the bosonic species can be maintained during the entire cooling process. This could allow to efficiently achieve a deep Fermi degeneracy regime having at the same time a significant thermal fraction for the Bose gas, crucial for a precise thermometry of the mixture. Two possible signatures of a superfluid phase transition for the Fermi species are discussed.

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