scholarly journals Collective oscillations of a Fermi gas in the unitarity limit: Temperature effects and the role of pair correlations

2008 ◽  
Vol 78 (5) ◽  
Author(s):  
S. Riedl ◽  
E. R. Sánchez Guajardo ◽  
C. Kohstall ◽  
A. Altmeyer ◽  
M. J. Wright ◽  
...  
Keyword(s):  
Temperature Effects ◽  
Fermi Gas ◽  
Unitarity Limit ◽  
Pair Correlations ◽  
Collective Oscillations

scholarly journals Effect of weak disorder on the BCS–BEC crossover in a two-dimensional Fermi gas

2017 ◽  
Vol 31 (09) ◽  
pp. 1750066
Author(s):  
Ayan Khan ◽  
B. Tanatar
Keyword(s):  
Field Theory ◽  
Mean Field Theory ◽  
Mean Field ◽  
Fermi Gas ◽  
Ultracold Fermi Gas ◽  
Condensate Fraction ◽  
Two Dimensional ◽  
Weak Disorder ◽  
Unique Nature

In this paper, we study the two-dimensional (2D) ultracold Fermi gas with weak impurity in the framework of mean-field theory where the impurity is introduced through Gaussian fluctuations. We have investigated the role of the impurity by studying the experimentally accessible quantities such as condensate fraction and equation of state of the ultracold systems. Our analysis reveals that at the crossover, the disorder enhances superfluidity, which we attribute to the unique nature of the unitary region and to the dimensional effect.

Vibrational Dephasing and Collision Induced Scattering in Molecular Liquids

1983 ◽  
Vol 22 ◽  
Author(s):  
Jiri Jonas
Keyword(s):  
Experimental Data ◽  
High Pressure ◽  
Temperature Effects ◽  
Essential Role ◽  
Theoretical Models ◽  
Molecular Liquids ◽  
Vibrational Dephasing

ABSTRACTThe results of several Raman studies of vibrational dephasing in polyatomic molecular liquids at high pressure are reviewed. The density and temperature effects on vibrational dephasing of isotropic Raman bands for different vibrational models are reported for the following liquids: C(CH3)4; Si(CH3)4; Ge(CH3)4; ; Sn(CH3)4 and isobutylene CH2; = C(CH3) 2.The experimental data are used to test the current theoretical models of vibrational dephasing. Selected results of our high pressure experiments on collision induced scattering in polyatomic molecular liquids demonstrate well the essential role of high pressure in studying these phenomena.

scholarly journals The role of causality in tunable Fermi gas condensates

2013 ◽  
Vol 25 (40) ◽  
pp. 404211 ◽  
Author(s):  
Jen-Tsung Hsiang ◽  
Chi-Yong Lin ◽  
Da-Shin Lee ◽  
Ray J Rivers
Keyword(s):  
Fermi Gas ◽  
Gas Condensates
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