Kuneš Jan
Institute of Physics, Academy of Sciences of the Czech republic, Na Slovance 2, Praha 8, 182 21, Czech Republic.
J Phys Condens Matter. 2015 Aug 26;27(33):333201. doi: 10.1088/0953-8984/27/33/333201. Epub 2015 Jul 28.
The idea of exciton condensation in solids was introduced in the 1960s with the analogy of superconductivity in mind. While exciton supercurrents have been realised only in artificial quantum-well structures so far, the application of the concept of excitonic condensation to bulk solids leads to a rich spectrum of thermodynamic phases with diverse physical properties. In this review we discuss recent developments in the theory of exciton condensation in systems described by Hubbard-type models. In particular, we focus on the connections to their various strong-coupling limits that have been studied in other contexts, e.g. cold atoms physics. One of our goals is to provide a 'dictionary' that would allow the reader to efficiently combine results obtained in these different fields.
固体中激子凝聚的概念是在20世纪60年代提出的，当时脑海中类比了超导现象。虽然到目前为止，激子超电流仅在人工量子阱结构中得以实现，但将激子凝聚的概念应用于块状固体可产生具有多样物理性质的丰富热力学相谱。在这篇综述中，我们讨论了哈伯德型模型所描述系统中激子凝聚理论的最新进展。特别地，我们关注与在其他背景下（例如冷原子物理）所研究的各种强耦合极限的联系。我们的目标之一是提供一本“词典”，使读者能够有效地整合在这些不同领域中获得的结果。
