scholarly journals Scattering from a two-dimensional array of flux tubes: A study of the validity of mean field theory

1994 ◽  
Vol 49 (4) ◽  
pp. 2081-2091 ◽  
Author(s):  
Ken Kiers ◽  
Nathan Weiss
Keyword(s):  
Field Theory ◽  
Mean Field Theory ◽  
Mean Field ◽  
Two Dimensional ◽  
Flux Tubes ◽  
Dimensional Array

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.

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