Compressibility, zero sound, and effective mass of a fermionic dipolar gas at finite temperature
Abstract
The compressibility, zero sound dispersion, and effective mass of a gas of fermionic dipolar molecules is calculated at finite temperature for one-, two-, and three-dimensional uniform systems, and in a multilayer quasi-two-dimensional system. The compressibility is nonmonotonic in the reduced temperature, , exhibiting a maximum at finite temperature. This effect might be visible in a quasi-low-dimensional experiment, providing a clear signature of the onset of many-body quantum degeneracy effects. The collective mode dispersion and effective mass show similar nontrivial temperature and density dependence. In a quasi-low-dimensional system, the zero sound mode may propagate at experimentally attainable temperatures.
Keywords
Cite
@article{arxiv.1001.4763,
title = {Compressibility, zero sound, and effective mass of a fermionic dipolar gas at finite temperature},
author = {J. P. Kestner and S. Das Sarma},
journal= {arXiv preprint arXiv:1001.4763},
year = {2010}
}
Comments
19 pages, 12 figures; substantially revised and expanded