Dip-hump temperature dependence of Specific Heat and Effects of Pairing Fluctuations in the Weak-coupling Side of a -wave Interacting Fermi Gas
arXiv:1610.04860 · doi:10.7566/JPSJ.85.123301
Abstract
We investigate the specific heat at constant volume in the normal state of a -wave interacting Fermi gas. Including -wave pairing fluctuations within the strong-coupling theory developed by Nozières and Schmitt-Rink, we show that, in the weak-coupling side, exhibits a dip-hump behavior as a function of the temperature. While the dip is associated with the pseudogap phenomenon near , the hump structure is found to come from the suppression of Fermi quasiparticle scattering into a -wave molecular state in the Fermi degenerate regime. Since the latter phenomenon does not occur in the ordinary -wave interacting Fermi gas, it may be viewed as a characteristic phenomenon associated with a -wave pairing interaction.
5 pages, 6 figures
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