About conditions of spatial collapse in an infinite system of Bose particles
arXiv:2201.07900 · doi:10.15407/ujpe66.12.1024
Abstract
Using the variational principle, we show that the condition of spatial collapse in a Bose gas is not determined by the value of the scattering length of the interaction potential between particles contrary to the result following from the Gross--Pitaevskii equation, where the collapse should take place at a negative scattering length.
3 pages, 1 Encapsulated PostScript figure, uses ujp.sty