Back to Search
Start Over
Time-resolved observation of competing attractive and repulsive short-range correlations in strongly interacting Fermi gases
- Source :
- Phys. Rev. Lett. 121, 253602 (2018)
- Publication Year :
- 2018
-
Abstract
- We exploit a time-resolved pump-probe spectroscopic technique to study the out-of-equilibrium dynamics of an ultracold two-component Fermi gas, selectively quenched to strong repulsion along the upper branch of a broad Feshbach resonance. For critical interactions, we find the rapid growth of short-range anti-correlations between repulsive fermions to initially overcome concurrent pairing processes. At longer evolution times, these two competing mechanisms appear to macroscopically coexist in a short-range correlated state of fermions and pairs, unforeseen thus far. Our work provides fundamental insights into the fate of a repulsive Fermi gas, and offers new perspectives towards the exploration of complex dynamical regimes of fermionic matter.<br />Comment: 5+11 pages, 4+11 figures, 54 references
- Subjects :
- Condensed Matter - Quantum Gases
Physics - Atomic Physics
Subjects
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. Lett. 121, 253602 (2018)
- Publication Type :
- Report
- Accession number :
- edsarx.1807.10208
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevLett.121.253602