强相互作用费米混合物的晶相
Crystalline phase of strongly interacting Fermi mixtures
摘要：
我们表明，系统的弱结合分子的重和轻的费米子原子的特征在于由长程分子间的排斥，并可以进行气体晶体量子跃迁，如果质量比超过一个临界值。对于在我们的计算中获得的临界质量比大于100，这种晶体顺序可以观察到作为超晶格的光晶格的重原子具有小的填充因子。我们还发现，这个新的系统是足够稳定的分子弛豫到深束缚态和三聚体形成的过程。
英文摘要：
We show that the system of weakly bound molecules of heavy and light fermionic atoms is characterized by a long-range intermolecular repulsion and can undergo a gas-crystal quantum transition if the mass ratio exceeds a critical value. For the critical mass ratio above 100 obtained in our calculations, this crystalline order can be observed as a superlattice in an optical lattice for heavy atoms with a small filling factor. We also find that this novel system is sufficiently stable with respect to molecular relaxation into deep bound states and to the process of trimer formation.
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