Excitation spectrum of three dressed Bose-Einstein condensates
  We study quantum dynamics of three dressed Bose-Einstein condensates in a high-Q cavity. The quasiparticle excitation spectrum of this system is found numerically.   The stability of the quasiparticle excitation is analyzed. It is shown that there exist instabilities in the excitation spectrum. 
Zhong-Wen Ouyang and Le-Man Kuang (Hunan Normal University)