Polarization wave in the Bose-Einstein condensate

Andreev, P.
May 2012
Russian Physics Journal;May2012, Vol. 54 Issue 12, p1360
Academic Journal
Dispersion of elementary excitations is investigated based on the system of quantum hydrodynamics equations for the polarized Bose-Einstein condensate in the third order by the interaction radius. The dispersion law is analytically derived. The contribution of polarization to dispersion of the Bogolyubov mode is investigated. It is demonstrated that a new type of elementary excitations caused by evolution of polarization arises in the Bose-Einstein condensate whose atoms possess an electric dipole moment.


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