Abstract
We calculate the normal mass density of a paired Fermi gas at unitarity. The dominant contribution near the superfluid transition is from fermionic quasiparticle excitations and is, thus, sensitive to the pairing gap. A comparison with the recent experiment of Sidorenkov suggests that the superfluid gap near the transition temperature is larger than the BCS value, but the data do not permit a quantitative inference of the gap. Calculations of the quenched moment of inertia of a BCS superfluid in a harmonic trap are in reasonable agreement with the earlier experiment of Riedl.
| Original language | English |
|---|---|
| Journal | Physical Review A (Atomic, Molecular and Optical Physics) |
| Volume | 88 |
| Issue number | 043631 |
| Pages (from-to) | 043631 |
| Number of pages | 5 |
| ISSN | 2469-9926 |
| DOIs | |
| Publication status | Published - 21 Oct 2013 |