title: Phase separation in asymmetrical fermion superfluids.
abstract: Motivated by recent developments on cold atom traps and high density QCD we consider fermionic systems composed of two particle species with different densities. We argue that a mixed phase composed of normal and superfluid components is the energetically favored ground state. We suggest how this phase separation can be used as a probe of fermion superfluidity in atomic traps.
authors.affiliation: Lawrence-Berkeley Laboratory, Berkeley, California 94720, USA.
authors.forename: Paulo F
authors.initials: PF
authors.lastname: Bedaque
authors.forename: Heron
authors.initials: H
authors.lastname: Caldas
authors.forename: Gautam
authors.initials: G
authors.lastname: Rupak