0 10 43 61 v 1 1 9 A pr 2 00 1 Quantum Coherence of double-well BEc : a new approach

@inproceedings{Zhou2001014,
  title={0 10 43 61 v 1 1 9 A pr 2 00 1 Quantum Coherence of double-well BEc : a new approach},
  author={Yi Fan Zhou and Hui Zhai and R. -H. L{\"u} and Zhan Xu and Lee Chang},
  year={2001}
}
A new approach is presented to investigate the quantum coherence of Bose gas in a double-well potential by mapping the Bose system to the anisotropic spin system in the prescence of a magnetic field. In this picture, one can easily obtain the change from a coherent ground state to a Fock state in the replusive interaction case, and the change from a coherent state to a Schrödinger cat state in the attractive case. Within the instanton technique, we obtain the tunnel splitting of an attractive… CONTINUE READING