Sanpera A, Kantian A, Sanchez-Palencia L, Zakrzewski J, Lewenstein M
Institut de Ciències Fotòniques, 08034 Barcelona, Spain.
Phys Rev Lett. 2004 Jul 23;93(4):040401. doi: 10.1103/PhysRevLett.93.040401. Epub 2004 Jul 20.
We investigate strongly interacting atomic Fermi-Bose mixtures in inhomogeneous and random optical lattices. We derive an effective Hamiltonian for the system and discuss its low temperature physics. We demonstrate the possibility of controlling the interactions at local level in inhomogeneous but regular lattices. Such a control leads to the achievement of Fermi glass, quantum Fermi spin-glass, and quantum percolation regimes involving bare and/or composite fermions in random lattices.
我们研究了非均匀和随机光学晶格中强相互作用的原子费米 - 玻色混合物。我们推导了该系统的有效哈密顿量,并讨论了其低温物理性质。我们证明了在非均匀但规则的晶格中在局部水平控制相互作用的可能性。这种控制导致在随机晶格中实现涉及裸费米子和/或复合费米子的费米玻璃、量子费米自旋玻璃和量子渗流状态。