论文标题
希格斯模式在二维空间间接激子冷凝物中
Higgs modes in two-dimensional spatially-indirect exciton condensates
论文作者
论文摘要
凝结物理学中的希格斯模式引起了人们的注意，因为与粒子物理的希格斯玻色子相似。在这里，我们使用微观时间依赖性的平均场理论来研究二维空间间接激子（电子孔对）冷凝水的集体模式光谱，重点是HIGGS模式，即那些在电子孔对幅度振幅响应中具有很大的重量。我们发现，在低激子密度（BEC）限制中，空间间接激子冷凝水的主要希格斯模式对应于添加与凝结成对状态正交的电子孔对。根据这一发现，我们对先前研究的超导体类似Higgs的集体激发进行评论。
Higgs modes in condensed matter physics have drawn attention because of analogies to the Higgs bosons of particle physics. Here we use a microscopic time-dependent mean-field theory to study the collective mode spectra of two-dimensional spatially indirect exciton (electron-hole pair) condensates, focusing on the Higgs modes, i.e., those that have a large weight in electron-hole pair amplitude response functions. We find that in the low exciton density (BEC) limit, the dominant Higgs modes of spatially indirect exciton condensates correspond to adding electron-hole pairs that are orthogonal to the condensed pair state. We comment on the previously studied Higgs-like collective excitations of superconductors in light of this finding.
