An impurity immersed in a double Fermi Sea
arXiv:2004.12759 · doi:10.1103/PhysRevA.102.033322
Abstract
We present a variational calculation of the energy of an impurity immersed a double Fermi sea of non-interacting Fermions. We show that in the strong-coupling regime, the system undergoes a first order transition between polaronic and trimer states. Our result suggests that the smooth crossover predicted in previous literature for a superfluid background is the consequence of Cooper pairing and is absent in a normal system.
References in corpus (11)
- Many-Body Physics with Ultracold Gases
- Observation of Fermi Polarons in a Tunable Fermi Liquid of Ultracold Atoms
- Fermi-Polaron: Diagrammatic Monte Carlo for Divergent Sign-Alternating Series
- Normal state of a polarized Fermi gas at unitarity
- Ultra-cold Polarized Fermi Gases
- Analytical solution of the bosonic three-body problem
- Two-Element Mixture of Bose and Fermi Superfluids
- Trimers, molecules and polarons in imbalanced atomic Fermi gases
- Three fully polarized fermions close to a p-wave Feshbach resonance
- Polarons in Ultracold Fermi Superfluids
- Polaronic atom-trimer continuity in three-component Fermi gases