title: p-Wave polaron.
abstract: We consider a single impurity immersed in a Fermi sea close to an interspecies p-wave Feshbach resonance. We calculate its dispersion and spectral response to a radio frequency pulse. In a magnetic field, dipolar interactions split the resonance and two novel features with respect to the s-wave case appear: a third polaron branch in the excitation spectrum, in addition to the usual attractive and repulsive ones; and an anisotropic dispersion of the impurity characterized by different effective masses perpendicular and parallel to the magnetic field. The anisotropy can be tuned as a function of the field strength and the two effective masses may have opposite signs, or become smaller than the bare mass.
authors.affiliation: T.C.M. Group, Cavendish Laboratory, Cambridge, United Kingdom. jfl36@cam.ac.uk
authors.forename: Jesper
authors.initials: J
authors.lastname: Levinsen
authors.forename: Pietro
authors.initials: P
authors.lastname: Massignan
authors.forename: Frédéric
authors.initials: F
authors.lastname: Chevy
authors.forename: Carlos
authors.initials: C
authors.lastname: Lobo