Parametric instability of a two-component Bose-Einstein condensate driven by a strong time-dependent magnetic field

2001 ◽  
Vol 63 (2) ◽  
Author(s):  
G. M. Genkin
Keyword(s):  
Magnetic Field ◽  
Parametric Instability ◽  
Einstein Condensate ◽  
Time Dependent ◽  
Bose Einstein Condensate ◽  
Two Component ◽  
Bose Einstein

scholarly journals A Time-Splitting and Sine Spectral Method for Dynamics of Dipolar Bose-Einstein Condensate

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Si-Qi Li ◽  
Xiang-Gui Li ◽  
Dong-Ying Hua
Keyword(s):  
Spectral Method ◽  
Dipole Interaction ◽  
Einstein Condensate ◽  
Time Dependent ◽  
Three Dimension ◽  
S Wave ◽  
Bose Einstein Condensate ◽  
Two Component ◽  
Time Splitting ◽  
Bose Einstein

A two-component Bose-Einstein condensate (BEC) described by two coupled a three-dimension Gross-Pitaevskii (GP) equations is considered, where one equation has dipole-dipole interaction while the other one has only the usual s-wave contact interaction, in a cigar trap. The time-splitting and sine spectral method in space is proposed to discretize the time-dependent equations for computing the dynamics of dipolar BEC. The singularity in the dipole-dipole interaction brings significant difficulties both in mathematical analysis and in numerical simulations. Numerical results are given to show the efficiency of this method.

Excitation of a Bose–Einstein condensate in a time-dependent magnetic field

2004 ◽  
Vol 16 (24) ◽  
pp. 4193-4202
Author(s):  
W B Fan ◽  
Bo Xiong ◽  
X Q Liu ◽  
X G Zhao ◽  
W M Liu
Keyword(s):  
Magnetic Field ◽  
Einstein Condensate ◽  
Time Dependent ◽  
Bose Einstein Condensate ◽  
Bose Einstein

scholarly journals Magnon Laser

2019 ◽  
Vol 64 (10) ◽  
pp. 938 ◽  
Author(s):  
P. Nowik-Boltyk ◽  
I. V. Borisenko ◽  
V. E. Demidov ◽  
S. O. Demokritov
Keyword(s):  
Magnetic Field ◽  
Constant Velocity ◽  
Inhomogeneous Magnetic Field ◽  
Einstein Condensate ◽  
Time Dependent ◽  
Field Pulse ◽  
Bose Einstein Condensate ◽  
Spatially Inhomogeneous ◽  
Bose Einstein

We experimentally demonstrate a magnon laser based on the coherent Bose–Einstein condensate of magnons brought into motion by using a time-dependent spatially inhomogeneous magnetic field. We show that the application of a short field pulse results in the formation of a condensate cloud moving with the constant velocity of 930 m/s for the used parameters of the experiment. The number of magnons building the cloud is not changed during the propagation, which is reminiscent of the magnon superfluidity.

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