原子晶格激子：从凝聚态到晶体
Atomic lattice excitons: from condensates to crystals
摘要：
我们讨论了原子晶格激子（ALE），即由费米子原子在光晶格的两个能带中形成的束缚粒子-空穴对。这样的系统提供了一个干净的设置来研究激子的基本性质，从凝聚到激子晶体（粒子和空穴之间的有效质量比很大）。利用平均场处理和一维数值计算，我们讨论了ALE在不同条件下的性质，特别讨论了它们的制备和测量。
英文摘要：
We discuss atomic lattice excitons (ALEs), bound particle-hole pairs formed by fermionic atoms in two bands of an optical lattice. Such a system provides a clean setup to study fundamental properties of excitons, ranging from condensation to exciton crystals (which appear for a large effective mass ratio between particles and holes). Using both mean-field treatments and 1D numerical computation, we discuss the properities of ALEs under varying conditions, and discuss in particular their preparation and measurement.
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