Finite-temperature dynamics of shock waves in an ultracold Fermi gas

2018 ◽  
Vol 98 (1) ◽  
Author(s):  
Ria Rushin Joseph ◽  
Laura E. C. Rosales-Zárate ◽  
Peter D. Drummond
Keyword(s):  
Shock Waves ◽  
Finite Temperature ◽  
Fermi Gas ◽  
Ultracold Fermi Gas ◽  
Temperature Dynamics

THE SPECIFIC HEAT OF A FERMI GAS AT LOW TEMPERATURE: A CLOSER LOOK AT THE lnT BEHAVIOR

1999 ◽  
Vol 13 (28) ◽  
pp. 3357-3367 ◽  
Author(s):  
A. REBEI ◽  
W. N. G. HITCHON
Keyword(s):  
Low Temperature ◽  
Specific Heat ◽  
Finite Temperature ◽  
Thermodynamic Potential ◽  
Fermi Gas ◽  
Zero Temperature

At finite temperature, a Fermi gas can have states that simultaneously hold a particle and a hole with a finite probability. This gives rise to a new set of diagrams that are absent at zero temperature. The so called "anomalous" diagram is just one of the new diagrams. We have already studied the contribution of these new diagrams to the thermodynamic potential (Phys. Lett.A224, 127 (1996)). Here we continue that work and calculate their effect on the specific heat. We will also calculate the finite temperature contribution of the ring diagrams. We conclude that the ln T behavior of the specific heat due to exchange gets canceled by the new contribution of the new diagrams, and that screening is not essential to resolve this anomaly.

scholarly journals Excess energy of an ultracold Fermi gas in a trapped geometry

2012 ◽  
Vol 66 (8) ◽  
Author(s):  
Shyamal Biswas ◽  
Debnarayan Jana ◽  
Raj Kumar Manna
Keyword(s):  
Fermi Gas ◽  
Excess Energy ◽  
Ultracold Fermi Gas

scholarly journals Finite-temperature momentum distribution of a trapped Fermi gas

2006 ◽  
Vol 74 (1) ◽  
Author(s):  
Qijin Chen ◽  
C. A. Regal ◽  
D. S. Jin ◽  
K. Levin
Keyword(s):  
Momentum Distribution ◽  
Finite Temperature ◽  
Fermi Gas

Radio-frequency spectroscopy of weakly bound molecules in ultracold Fermi gas

2014 ◽  
Vol 23 (1) ◽  
pp. 013402 ◽  
Author(s):  
Liang-Hui Huang ◽  
Peng-Jun Wang ◽  
Zheng-Kun Fu ◽  
Jing Zhang
Keyword(s):  
Radio Frequency ◽  
Fermi Gas ◽  
Ultracold Fermi Gas ◽  
Weakly Bound ◽  
Radio Frequency Spectroscopy

scholarly journals Finite-temperature dynamics of the Mott insulating Hubbard chain

2018 ◽  
Vol 97 (4) ◽  
Author(s):  
Alberto Nocera ◽  
Fabian H. L. Essler ◽  
Adrian E. Feiguin
Keyword(s):  
Finite Temperature ◽  
Temperature Dynamics

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.

scholarly journals Dynamics of shock waves in a superfluid unitary Fermi gas

2015 ◽  
Vol 48 (17) ◽  
pp. 175301 ◽  
Author(s):  
Wen Wen ◽  
Tiankun Shui ◽  
Yafei Shan ◽  
Changping Zhu
Keyword(s):  
Shock Waves ◽  
Fermi Gas ◽  
Unitary Fermi Gas
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