Communications in Theoretical Physics, Volume. 72, Issue 8, (2020)
Variational theory for the ground state and collective excitations of an elongated dipolar condensate
We develop a variational theory for a dipolar condensate in an elongated (cigar shaped) confinement potential. Our formulation provides an effective one-dimensional extended meanfield theory for the ground state and its collective excitations. We apply our theory to investigate the properties of rotons in the system comparing the variational treatment to a full numerical solution. We consider the effect of quantum fluctuations on the scattering length at which the roton excitation softens to zero energy.
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P Blair Blakie, D Baillie, Sukla Pal. Variational theory for the ground state and collective excitations of an elongated dipolar condensate[J]. Communications in Theoretical Physics, 2020, 72(8):
Received: Feb. 21, 2020
Accepted: May. 15, 2020
Published Online: Apr. 22, 2021
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