TY - JOUR
T1 - Ground state and quasiparticle spectrum of a two-component Bose-Einstein condensate
AU - Search, C. P.
AU - Rojo, A. G.
AU - Berman, P. R.
PY - 2001
Y1 - 2001
N2 - We consider a dilute homogenous atomic Bose-Einstein condensate with two nondegenerate internal energy levels that achieve a state of chemical equilibrium in the presence of an external radiation field that couples the two states. The presence of the radiation field can result in new ground states for the condensate as a consequence of the lowering of the condensate energy due to the interaction energy with the field. We analyze the ground-state energy as a function of the coupling constants for the two-body interactions, the Rabi frequency of the radiation field, and the detuning of the field, and we give explicit expressions for the quasiparticle excitation spectrum.
AB - We consider a dilute homogenous atomic Bose-Einstein condensate with two nondegenerate internal energy levels that achieve a state of chemical equilibrium in the presence of an external radiation field that couples the two states. The presence of the radiation field can result in new ground states for the condensate as a consequence of the lowering of the condensate energy due to the interaction energy with the field. We analyze the ground-state energy as a function of the coupling constants for the two-body interactions, the Rabi frequency of the radiation field, and the detuning of the field, and we give explicit expressions for the quasiparticle excitation spectrum.
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U2 - 10.1103/PhysRevA.64.013615
DO - 10.1103/PhysRevA.64.013615
M3 - Article
AN - SCOPUS:85037212418
SN - 1050-2947
VL - 64
SP - 7
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 1
ER -