Heat Capacity of a Strongly-Interacting Fermi Gas
Abstract
We have measured the heat capacity of an optically-trapped, strongly-interacting Fermi gas of atoms. A precise input of energy to the gas is followed by single-parameter thermometry, which determines the empirical temperature parameter of the gas cloud. Our measurements reveal a clear transition in the heat capacity. The energy and the spatial profile of the gas are computed using a theory of the crossover from Fermi to Bose superfluids at finite temperature. The theory calibrates , yields excellent agreement with the data, and predicts the onset of superfluidity at the observed transition point.
Keywords
Cite
@article{arxiv.cond-mat/0502087,
title = {Heat Capacity of a Strongly-Interacting Fermi Gas},
author = {J. Kinast and A. Turlapov and J. E. Thomas and Qijin Chen and Jelena Stajic and K. Levin},
journal= {arXiv preprint arXiv:cond-mat/0502087},
year = {2011}
}
Comments
This paper is a joint version of cond-mat/0409283 and cond-mat/0411090. The joint paper was published in Science Express and will appear in Science Magazine