We have solved the coupled Gross-Pitaevskii equations for a two-species condensate confined within a fully anisotropic magnetic trap. Both variational and numerical methods are used to solve the Gross-Pitaevskii equations, and the original numerical approach is discussed in more length. The calculation of the two-species excitation spectrum shows that the mode frequencies of the individual condensates are modified in a two-species condensate interatomic interaction, with new excitation modes present in the mixed system, The spatial distributions of the two condensates show deformations produced by the interatomic interactions, with either compression of the atoms in the central region of the trap, or with a decrease of the atomic density in that region. (C) 1999 Published by Elsevier Science B.V. All rights reserved.
Excitation frequencies and stability regions for two-species Bose-Einstein condensate in a triaxial magnetic trap
MANNELLA, RICCARDO;ARIMONDO, ENNIO
1999-01-01
Abstract
We have solved the coupled Gross-Pitaevskii equations for a two-species condensate confined within a fully anisotropic magnetic trap. Both variational and numerical methods are used to solve the Gross-Pitaevskii equations, and the original numerical approach is discussed in more length. The calculation of the two-species excitation spectrum shows that the mode frequencies of the individual condensates are modified in a two-species condensate interatomic interaction, with new excitation modes present in the mixed system, The spatial distributions of the two condensates show deformations produced by the interatomic interactions, with either compression of the atoms in the central region of the trap, or with a decrease of the atomic density in that region. (C) 1999 Published by Elsevier Science B.V. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
