1203.2020 (J. Smyrnakis et al.)

Excitation spectrum of a two-component Bose-Einstein condensate in a
ring potential    [PDF]

J. Smyrnakis, M. Magiropoulos, A. D. Jackson, G. M. Kavoulakis

A mixture of two distinguishable Bose-Einstein condensates confined in a ring potential has numerous interesting properties under rotational and solitary-wave excitation. The lowest-energy states for a fixed angular momentum coincide with a family of solitary-wave solutions. In the limit of weak interactions, exact diagonalization of the many-body Hamiltonian is possible and permits evaluation of the complete excitation spectrum of the system.

View original: http://arxiv.org/abs/1203.2020