Dynamics and Ground State Properties of Two-component Bose-Einstein Condensate in Different Hyperfine States

2010 ◽  
Vol 161 (3-4) ◽  
pp. 334-347 ◽  
Author(s):  
Chen Liang ◽  
Kong Wei ◽  
B. J. Ye ◽  
H. M. Wen ◽  
X. Y. Zhou ◽  
...  
Keyword(s):  
Ground State ◽  
Einstein Condensate ◽  
Bose Einstein Condensate ◽  
Ground State Properties ◽  
Two Component ◽  
Bose Einstein

scholarly journals Two-component axionic dark matter halos

2020 ◽  
Vol 35 (26) ◽  
pp. 2050227 ◽  
Author(s):  
Gennady P. Berman ◽  
Vyacheslav N. Gorshkov ◽  
Vladimir I. Tsifrinovich ◽  
Marco Merkli ◽  
Vladimir V. Tereshchuk
Keyword(s):  
Dark Matter ◽  
Ground State ◽  
Mass Density ◽  
Mean Field ◽  
Einstein Condensate ◽  
Dark Matter Halo ◽  
Bose Einstein Condensate ◽  
Interesting Connection ◽  
Two Component ◽  
Bose Einstein

We consider a two-component dark matter halo (DMH) of a galaxy containing ultra-light axions (ULA) of different mass. The DMH is described as a Bose–Einstein condensate (BEC) in its ground state. In the mean-field (MF) limit, we have derived the integro-differential equations for the spherically symmetrical wave functions of the two DMH components. We studied, numerically, the radial distribution of the mass density of ULA and constructed the parameters which could be used to distinguish between the two- and one-component DMH. We also discuss an interesting connection between the BEC ground state of a one-component DMH and Black Hole temperature and entropy, and Unruh temperature.

scholarly journals Homogeneous one-dimensional Bose–Einstein condensate in the Bogoliubov’s regime

2016 ◽  
Vol 30 (22) ◽  
pp. 1650307 ◽  
Author(s):  
Elías Castellanos
Keyword(s):  
Ground State ◽  
Size Effects ◽  
Finite Size ◽  
Einstein Condensate ◽  
Finite Size Effects ◽  
One Dimensional ◽  
Bose Einstein Condensate ◽  
Ground State Properties ◽  
Low Dimensional ◽  
Bose Einstein

We analyze the corrections caused by finite size effects upon the ground state properties of a homogeneous one-dimensional (1D) Bose–Einstein condensate. We assume from the very beginning that the Bogoliubov’s formalism is valid and consequently, we show that in order to obtain a well-defined ground state properties, finite size effects of the system must be taken into account. Indeed, the formalism described in the present paper allows to recover the usual properties related to the ground state of a homogeneous 1D Bose–Einstein condensate but corrected by finite size effects of the system. Finally, this scenario allows us to analyze the sensitivity of the system when the Bogoliubov’s regime is valid and when finite size effects are present. These facts open the possibility to apply these ideas to more realistic scenarios, e.g. low-dimensional trapped Bose–Einstein condensates.

scholarly journals Spatially non-uniform ground state and quantized vortices in a two-component Bose-Einstein condensate of magnons

2012 ◽  
Vol 2 (1) ◽  
Author(s):  
P. Nowik-Boltyk ◽  
O. Dzyapko ◽  
V. E. Demidov ◽  
N. G. Berloff ◽  
S. O. Demokritov
Keyword(s):  
Ground State ◽  
Einstein Condensate ◽  
Quantized Vortices ◽  
Bose Einstein Condensate ◽  
Two Component ◽  
Bose Einstein

scholarly journals Ground state of a two-component dipolar Bose-Einstein condensate confined in a coupled annular potential

2015 ◽  
Vol 64 (6) ◽  
pp. 060302
Author(s):  
Zhang Xiao-Fei ◽  
Zhang Pei ◽  
Chen Guang-Ping ◽  
Dong Biao ◽  
Tan Ren-Bing ◽  
...  
Keyword(s):  
Ground State ◽  
Einstein Condensate ◽  
Bose Einstein Condensate ◽  
Two Component ◽  
Bose Einstein
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