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Interior gap superfluidity in a two-component Fermi gas of atoms

Bimalendu Deb·Amruta Mishra·Hiranmaya Mishra·Prasanta K. Panigrahi
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Abstract

A new superfluid phase in Fermi matter, termed as "interior gap" (IG) or "breached pair", has been recently predicted by Liu and Wilczek [Phys.Rev.Lett. {\bf 90}, 047002 (2003)]. This results from pairing between fermions of two species having essentially different Fermi surfaces. Using a nonperturbative variational approach, we analyze the features, such as energy gap, momentum distributions, and elementary excitations associated with the predicted phase. We discuss possible realization of this phase in two-component Fermi gases in an optical trap.

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Bimalendu Deb, Amruta Mishra, Hiranmaya Mishra, Prasanta K. Panigrahi. 2004-07-27. Interior gap superfluidity in a two-component Fermi gas of atoms. https://doi.org/10.1103/physreva.70.011604

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