The p-wave polaron

Abstract

We consider the properties of 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 radiofrequency pulse. In the presence of a magnetic field, dipolar interactions split the resonance and lead to the appearance of two novel features with respect to the s-wave case: 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.

5 pages, 5 figures

References in corpus (31)

• Metastability and Coherence of Repulsive Polarons in a Strongly Interacting Fermi Mixture
• Attractive and repulsive Fermi polarons in two dimensions
• Universal phase diagram of a strongly interacting Fermi gas with unbalanced spin populations
• Resonantly-paired fermionic superfluids
• Exploring an ultracold Fermi-Fermi mixture: Interspecies Feshbach resonances and scattering properties of 6Li and 40K
• Normal state of highly polarized Fermi gases: simple many-body approaches
• Normal state of a polarized Fermi gas at unitarity
• Quantum phase transitions across p-wave Feshbach resonance
• Multiplet Structure of Feshbach Resonances in non-zero partial waves
• P-wave Feshbach resonances of ultra-cold ${}^6$Li
• Ultra-cold Polarized Fermi Gases
• p-wave Feshbach molecules
• Phase separation in a polarized Fermi gas at zero temperature
• Excitation spectra and rf-response near the polaron-to-molecule transition from the functional renormalization group
• Polarons in the radio-frequency spectrum of a quasi-two-dimensional Fermi gas
• Stability of a Fully Magnetized Ferromagnetic state in Repulsively Interacting Ultracold Fermi Gases
• Anisotropic Fermi Superfluid via p-wave Feshbach Resonance
• Repulsive polarons and itinerant ferromagnetism in strongly polarized Fermi gases
• Collisional Properties of p-Wave Feshbach Molecules
• Binding Energies of 6Li p-wave Feshbach Molecules
• Three fully polarized fermions close to a p-wave Feshbach resonance
• Atom-dimer scattering and long-lived trimers in fermionic mixtures
• Stability of the fermionic gases close to a p-wave Feshbach resonance
• Evolution from BCS to BEC superfluidity in p-wave Fermi gases
• Strongly-resonant p-wave superfluids
• Resonant scattering properties close to a p-wave Feshbach resonance
• An impurity in a Fermi sea on a narrow Feshbach resonance: A variational study of the polaronic and dimeronic branches
• Polarons and dressed molecules near narrow Feshbach resonances
• Confinement-induced p-wave resonances from s-wave interactions
• p-Wave Optical Feshbach Resonances in Yb-171
• Highly Polarized Fermi Gases across a Narrow Feshbach Resonance

Cited by in corpus (23)

• Polarons, Dressed Molecules, and Itinerant Ferromagnetism in ultracold Fermi gases
• Universal many-body response of heavy impurities coupled to a Fermi sea
• SU(3) orbital Kondo effect with ultracold atoms
• Non-Hermitian Squeezed Polarons
• The neutron polaron as a constraint on nuclear density functionals
• Quasiparticle properties of a single alpha particle in cold neutron matter
• Theory of the Rotating Polaron: Spectrum and Self-Localization
• Effective field theory of interactions on the lattice
• Bose polaron in spherical trap potentials: Spatial structure and quantum depletion
• A strongly interacting high partial wave Bose gas
• Normal State Properties of a resonantly interacting p-wave Fermi Gas
• Intersections of ultracold atomic polarons and nuclear clusters: How is a chart of nuclides modified in dilute neutron matter?
• Exact results for polaron and molecule in one-dimensional spin-1/2 Fermi gas
• Thermally stable p-wave repulsive Fermi polaron without a two-body bound state
• Highly polarized one-dimensional Fermi gases near a narrow $p-$wave resonance
• Universal relations and normal-state properties of a Fermi gas with laser-dressed mixed-partial-wave interactions
• Three-body universality in ultracold $p$-wave resonant mixtures
• Excitonic states of an impurity in a Fermi gas
• Bose polaron in spherically symmetric trap potentials: Ground states with zero and lower angular momenta
• Resonance-to-bound transition of ${}^5$He in neutron matter and its analogy with heteronuclear Feshbach molecule
• Temperature dependence of $p$-wave contacts in a harmonically trapped Fermi gas
• Polaronic neutron in dilute alpha matter: A $p$-wave Bose polaron
• From few to many body degrees of freedom