Superfluid-normal quantum phase transitions in an imbalanced Fermi gas
Abstract
We investigate the superfluid-to-normal zero temperature quantum phase transitions of asymmetric two-component Fermi gases as a function of the chemical potential imbalance h. The calculations are performed for homogeneous and trapped imbalanced systems. We concentrate at unitarity, characterized by a divergent interaction parameter kF a, where most of the current experiments are realized. For homogeneous systems, we determine the critical chemical potential imbalance hc at which possible phase transitions occur. In the case of trapped gases, we show how hc can be consistently determined from experimental observations.
- Publication:
-
Journal of Physics B Atomic Molecular Physics
- Pub Date:
- April 2020
- DOI:
- 10.1088/1361-6455/ab7078
- arXiv:
- arXiv:2003.00156
- Bibcode:
- 2020JPhB...53h5301C
- Keywords:
-
- superfluidity of a cold Fermi gas;
- imbalanced Fermi gas;
- superfluid-normal quantum phase transition;
- Condensed Matter - Quantum Gases;
- Condensed Matter - Superconductivity;
- High Energy Physics - Theory;
- Nuclear Theory
- E-Print:
- 7 pages, 2 figures, to appear in JPB