ENTANGLEMENT DYNAMICS OF FLUCTUATIONS IN TWO-MODE BOSE–EINSTEIN CONDENSATES

2010 ◽  
Vol 24 (25) ◽  
pp. 2571-2580
Author(s):  
P. L. SHU ◽  
L. C. WANG ◽  
X. X. YI
Keyword(s):  
Time Evolution ◽  
Mean Field ◽  
Field Approximation ◽  
Mean Field Approximation ◽  
Entanglement Dynamics ◽  
Weakly Coupled ◽  
Tunneling Transition ◽  
The Mean ◽  
Bose Einstein ◽  
Double Well Potential

The entanglement dynamics of fluctuations in two weakly coupled Bose–Einstein condensates (BECs) is studied in this paper. By calculating the time evolution of entanglement between two fluctuations of condensates in a double-well potential, we show that the nonlinear tunneling transition can be reflected in the entanglement dynamics of fluctuations in BECs. This complements the study on the entanglement dynamics of BECs based on the mean-field approximation.

Decay of a Bose-Einstein condensate in a dissipative lattice – the mean-field approximation and beyond

2011 ◽  
Vol 63 (1) ◽  
pp. 63-71 ◽  
Author(s):  
F. Trimborn ◽  
D. Witthaut ◽  
H. Hennig ◽  
G. Kordas ◽  
T. Geisel ◽  
...  
Keyword(s):  
Mean Field ◽  
Field Approximation ◽  
Einstein Condensate ◽  
Mean Field Approximation ◽  
Bose Einstein Condensate ◽  
The Mean ◽  
Bose Einstein

scholarly journals The Combined Effect of Rotation and Magnetic Field on Finite-Amplitude Thermal Convection

1973 ◽  
Vol 26 (5) ◽  
pp. 617 ◽  
Author(s):  
R Van der Borght ◽  
JO Murphy
Keyword(s):  
Magnetic Field ◽  
Mean Field ◽  
Field Approximation ◽  
Finite Amplitude ◽  
Combined Effect ◽  
Mean Field Approximation ◽  
Free Boundaries ◽  
Wide Range ◽  
The Mean ◽  
Basic Equations

The combined effect of an imposed rotation and magnetic field on convective transfer in a horizontal Boussinesq layer of fluid heated from below is studied in the mean field approximation. The basic equations are derived by a variational technique and their solutions are then found over a wide range of conditions, in the case of free boundaries, by numerical and analytic techniques, in particular by asymptotic and perturbation methods. The results obtained by the different techniques are shown to be in excellent agreement. As for the linear theory, the calculations predict that the simultaneous presence' of a magnetic field and rotation may produce conflicting tendencies.

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