两类不同矢量玻色子系统的量子相变和非同一性程度
Quantum phase transitions and the degree of nonidentity in the system with two different species of vector bosons
摘要：
我们研究了在光晶格中含有两种矢量玻色子的系统。除了表征这样一个系统的标准参数外，我们在这里讨论的是“原子非同一性程度”，表现在隧道振幅和现场库仑相互作用的差异上。我们得到了一个级联的量子相变发生的程度的增加，原子的非同一性。特别是，我们表明，强烈不同的原子的相图是定性不同的（几乎）相同的原子考虑较早。由此产生的相图从类似于“米罗式绘画”的图像演变为“K。像马莱维茨一样的。
英文摘要：
We address the system with two species of vector bosons in an optical lattice. In addition to the the standard parameters characterizing such a system, we are dealing here with the "degree of atomic nonidentity", manifesting itself in the difference of tunneling amplitudes and on-site Coulomb interactions. We obtain a cascade of quantum phase transitions occurring with the increase in the degree of atomic nonidentity. In particular, we show that the phase diagram for strongly distinct atoms is qualitatively different from that for (nearly) identical atoms considered earlier. The resulting phase diagrams evolve from the images similar to the "J. Miró-like paintings" to "K. Malewicz-like" ones.
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