Marchetti Francesca M, Jolicoeur Th, Parish Meera M
Departamento de Física Teórica de la Materia Condensada, Universidad Autónoma de Madrid, Madrid 28049, Spain.
Phys Rev Lett. 2009 Sep 4;103(10):105304. doi: 10.1103/PhysRevLett.103.105304.
We consider a mixture of single-component bosonic and fermionic atoms in an array of coupled one-dimensional "tubes." For an attractive Bose-Fermi interaction, we show that the system exhibits phase separation instead of the usual collapse. Moreover, above a critical intertube hopping, all first-order instabilities disappear in both attractive and repulsive mixtures. The possibility of suppressing instabilities in this system suggests a route towards the realization of paired phases, including a superfluid of p-wave pairs unique to the coupled-tube system, and quantum critical phenomena.
我们考虑在一维耦合“管”阵列中的单组分玻色子和费米子原子的混合物。对于吸引性的玻色 - 费米相互作用，我们表明该系统呈现出相分离而非通常的坍缩。此外，在临界的管间跳跃之上，吸引和排斥混合物中的所有一阶不稳定性都消失了。在该系统中抑制不稳定性的可能性为实现配对相（包括耦合管系统特有的p波对的超流体）以及量子临界现象提供了一条途径。
