scholarly journals Collective Tunnelling of Strongly Interacting Cold Atoms in a Double‐Well Potential

2020 ◽  
Vol 532 (3) ◽  
pp. 1900462
Author(s):  
Dmitri Sokolovski ◽  
Xavier Gutiérrez de la Cal ◽  
Marisa Pons
Keyword(s):  
Cold Atoms ◽  
Strongly Interacting ◽  
Double Well Potential

scholarly journals Equivalence of Dissipative and Dissipationless Dynamics of Interacting Quantum Systems With Its Application to the Unitary Fermi Gas

2021 ◽  
Vol 9 ◽  
Author(s):  
Masaaki Tokieda ◽  
Shimpei Endo
Keyword(s):  
Quantum Dynamics ◽  
Cold Atoms ◽  
Fermi Gas ◽  
Quantum Systems ◽  
Harmonic Potential ◽  
Particle Interactions ◽  
Dissipative Dynamics ◽  
Strongly Interacting ◽  
Unitary Fermi Gas

We analytically study quantum dissipative dynamics described by the Caldirola-Kanai model with inter-particle interactions. We have found that the dissipative quantum dynamics of the Caldirola-Kanai model can be exactly mapped to a dissipationless quantum dynamics under a negative external harmonic potential, even when the particles are strongly interacting. In particular, we show that the mapping is valid for the unitary Fermi gas, which is relevant for cold atoms and nuclear matters.

Josephson dynamics of strongly interacting superfluid Fermi gases in double-well potentials

2020 ◽  
pp. 2150002
Author(s):  
Ji Li ◽  
Wen Wen ◽  
Yuke Zhang ◽  
Xiaodong Ma
Keyword(s):  
Einstein Condensate ◽  
Interaction Terms ◽  
Bose Einstein Condensate ◽  
Strongly Interacting ◽  
Fermi Superfluids ◽  
The Cross ◽  
Bose Einstein ◽  
Double Well Potential ◽  
Zero Phase ◽  
Superfluid Fermi

In this work, we study the nonlinear Josephson dynamics of Fermi superfluids in the crossover from Bardeen–Cooper–Schrieffer (BCS) superfluid to a molecular Bose-Einstein condensate (BEC) in a double-well potential. Under a two-mode approximation, we derive a full two-mode (fTM) model including all interaction energy terms. By solving the fTM model numerically, we study the zero-phase and [Formula: see text]-phase modes of Josephson oscillations in the BCS–BEC crossover. We find that in the strongly interacting regime the cross interaction terms not appearing in the two-mode model cannot be easily ignored. The cross interactions can alter the behaviors of Josephson dynamics substantially, and interestingly the alterations for the zero-phase and [Formula: see text]-phase modes are just opposite.

scholarly journals Correlated tunneling of cold atoms in double-well potential

2010 ◽  
Vol 59 (4) ◽  
pp. 2187
Author(s):  
Cao Hui ◽  
Zhao Qing
Keyword(s):  
Cold Atoms ◽  
Double Well Potential

scholarly journals Fermi-Liquid Behavior of the Normal Phase of a Strongly Interacting Gas of Cold Atoms

2011 ◽  
Vol 106 (21) ◽  
Author(s):  
S. Nascimbène ◽  
N. Navon ◽  
S. Pilati ◽  
F. Chevy ◽  
S. Giorgini ◽  
...  
Keyword(s):  
Fermi Liquid ◽  
Cold Atoms ◽  
Normal Phase ◽  
Strongly Interacting ◽  
Liquid Behavior ◽  
Fermi Liquid Behavior

Manipulations of cold atoms on a chip: double well potential and 1D Bose gas

2012 ◽  
Author(s):  
Jason Alexander ◽  
Violeta Prieto ◽  
Christopher Rowlett ◽  
William Golding ◽  
Patricia Lee
Keyword(s):  
Cold Atoms ◽  
Bose Gas ◽  
Double Well Potential
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