Abstract:
Free expansion of Bose–Einstein condensates of rubidium atoms at finite temperatures has been analyzed experimentally and theoretically. It has been shown that the interaction between condensed and noncondensed atoms is manifested most clearly by a decrease in the density of atoms in the center of the expanding cloud as compared to the theoretical prediction for a pure condensate.
Citation:
Yu. V. Likhanova, S. B. Medvedev, M. P. Fedoruk, P. L. Chapovsky, “Interaction of two fractions in a degenerate bose gas at finite temperatures”, Pis'ma v Zh. Èksper. Teoret. Fiz., 103:6 (2016), 452–457; JETP Letters, 103:6 (2016), 403–408