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Bulletin of the American Physical Society

Novel Superfluidity of Trapped Fermi Atoms Loaded on Optical Lattices

Masahiko Machida, Susumu Yamada, Yoji Ohashi, Hideki Matsumoto

Published Mar 21, 2005• 0 citations
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Comment on “Novel Superfluidity in a Trapped Gas of Fermi Atoms with Repulsive Interaction Loaded on an Optical Lattice”

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In a recent letter Machida et al. [Phys. Rev. Lett. 93, 200402 (2004)] concluded that in a trapped gas of fermions with repulsive interactions a superfluid phase appears around the Mott-insulator at the center of the trap. They base their conclusion on a negative binding energy, and a large weight for a singlet formed by particles located at opposite sides of the Mott-insulator. We show here that the observed effects are not related to superfluidity.

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