Spin-polarized fermions with $p$-wave interactions

Abstract

We study quantum degenerate Fermi gases of ${}^6$Li atoms at high densities ($10^{15}$ cm${}^{-3}$) and observe elastic and inelastic $p$-wave collisions far away from any Feshbach resonance. $P$-wave evaporation reaches temperatures of $T/T_F=0.42$ partially limited by the slow transfer of energy from high to low velocities through $p$-wave collisions. Via cross-dimensional thermalization, the $p$-wave background scattering volume is determined to be $|V_p|=(39_{-1.6}^{+1.3}{a}_0{)}^3$. $P$-wave dipolar relaxation creates a metastable mixture of the lowest and highest hyperfine states.

arXiv comment10 pages, 8 figures

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• p-wave phase shift and scattering length of ${}^6$Li

Cited by in corpus (15)

• Topological superconductivity in doped magnetic moiré semiconductors
• Observation of unitary p-wave interactions between fermions in an optical lattice
• On the Stability of the Repulsive Fermi Gas with Contact Interactions
• Non-Hermitian topological Fermi superfluid near the $p$-wave unitary limit
• Three and four identical fermions near the unitary limit
• Universality of internal correlations of strongly interacting p-wave fermions in one-dimensional geometry
• Quantum Monte Carlo study of the role of p-wave interactions in ultracold repulsive Fermi gases
• Observation of bosonic stimulation in light scattering
• Scattering Hypervolume of Spin-Polarized Fermions
• What can we learn from diffusion about Anderson localization of a degenerate Fermi gas?
• Long-lived fermionic Feshbach molecules with tunable $p$-wave interactions
• Non-Hermitian $p$-wave superfluid and effects of the inelastic three-body loss in a one-dimensional spin-polarized Fermi gas
• Cooper pairing and tripling in one-dimensional spinless fermions with attractive two- and three-body forces
• Pauli blocking of light scattering in degenerate fermions
• Elastic collision rates of spin-polarized fermions in two dimensions