费什巴赫共振实验中磁场对费米原子超流态的破坏
Destroying the superfluid state of fermionic atoms by the magnetic field in Feshbach resonance experiments
摘要：
我们证明了费米子原子的超流态只存在于小于临界磁场的磁场中。这个临界磁场是由不同自旋投影的原子在无磁场时的塞曼能裂相等决定的。对于通常用于费什巴赫共振实验的磁场，由于这些场远大于临界场，因此SF态会丢失。结果表明，随着磁场的增加，SF态的转变温度$ T_c $降低.
英文摘要：
We show that the superfluid state (SF) of fermionic atoms exist only for the magnetic fields lesser than the critical magnetic field. This critical magnetic field is determined by the equality of the Zeeman energy splitting for atoms with different spin projections to the energy gap of fermionic atoms without a magnetic field. For magnetic fields usually using in Feshbach resonance experiments a SF state is lost because these fields are much more than the critical field. We show that the transition temperature $ T_c $ of the SF state decreases as the magnetic field increases.
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