论文标题
电子孔液体中的biexciton样四重奏冷凝水
Biexciton-like quartet condensates in an electron-hole liquid
论文作者
论文摘要
我们从理论上研究了电子孔系统中类似激子的库珀对和类似Biexciton的Cooper四重奏的基础状态和凝结。将基于四重奏Bardeen-Cooper-Schrieffer（BCS）模型相关的变异方法应用于由Spin-1/2电子和Spin-1/2孔组成的四组分费米原系统，我们显示Cooper Pairs对和四重奏相关性如何出现在热力学极限的状态方程中。即使在高密度方案中，像Biexciton一样的四体相关性也可以作为多体BC的库珀四重奏状态。我们的结果对于在具有多个自由度的量子多体物理学的跨学科背景下进一步理解异国物质很有用。
We theoretically study the ground-state properties and the condensations of exciton-like Cooper pairs and biexciton-like Cooper quartets in an electron-hole system. Applying the variational approach associated based on the quartet Bardeen-Cooper-Schrieffer (BCS) model to the four-component fermionic system consisting of spin-1/2 electrons and spin-1/2 holes, we show how Cooper pairs and quartet correlations appear in the equation of state at the thermodynamic limit. The biexciton-like four-body correlations survive even at the high-density regime as a many-body BCS-like state of Cooper quartets. Our results are useful for further understanding of exotic matter in the interdisciplinary context of quantum many-body physics with multiple degrees of freedom.
