A CLASS OF CLOSED SOLUTIONS FOR THE BOGOLIUBOV EXCITATIONS ON SMOOTH GROUND STATE OF A TRAPPED BOSE–EINSTEIN CONDENSATE
Keyword(s):
The One
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Bogoliubov–de Gennes equations (BdGEs) for collective excitations from a trapped Bose–Einstein condensate described by a spatially smooth ground-state wavefunction can be treated analytically. A new class of closed solutions for the BdGEs is obtained for the one-dimensional (1D) and 3D spherically harmonic traps. The solutions of zero-energy mode of the BdGEs are also provided. The eigenfunctions of the excitations consist of zero-energy mode, zero-quantum-number mode and entire excitation modes when the approximate ground state is a background Bose gas sea.
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2020 ◽
Vol 35
(26)
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pp. 2050227
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2004 ◽
Vol 18
(27n29)
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pp. 3797-3802
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2010 ◽
Vol 161
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pp. 334-347
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1999 ◽
Vol 68
(12)
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pp. 3840-3847
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2018 ◽
Vol 51
(9)
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pp. 095302