Abstract
Radio frequency spectra of a trapped unitary gas are reported and analyzed in terms of a theoretical approach that includes both final-state and trap effects. The different strength of the final-state interaction across the trap is crucial for evidencing two main peaks associated with two distinct phases residing in different trap regions. These are the pairing-gap and pseudo-gap phases below the critical temperature , which evolve into the pseudo-gap and no-gap phases above . In this way, a long standing puzzle about the interpretation of rf spectra for in a trap is solved.
- Received 11 February 2011
DOI:https://doi.org/10.1103/PhysRevA.84.011608
©2011 American Physical Society