论文标题
双单层狄拉克半学中激子凝结的全息模型
Holographic model of exciton condensation in double monolayer Dirac semimetal
论文作者
论文摘要
在本文中，我们考虑了双单层狄拉克半学中激子凝结的全息模型。激子是电子和孔的结合状态。作为玻色颗粒，激子可以形成玻色的凝结物。我们研究两种类型的冷凝物的形成。在第一种情况下，形成激子的电子和孔都位于同一层（内凝结物内），在第二种情况下，电子和孔为不同的层（层间冷凝物）。我们研究冷凝物如何依赖于强磁场存在的层和准粒子质量之间的距离。为了考虑到电子之间可能的强库仑相互作用，我们使用全息图。全息模型由两个$ d5 $ branes组成，这些麸皮嵌入了抗De Sitter空间中。冷凝物是通过麸皮的几何配置来描述的。我们表明，层间冷凝物消失的层之间的距离随着准颗粒质量的降低。
In this paper we consider holographic model of exciton condensation in double monolayer Dirac semimetal. Excitons is a bound states of an electron and a hole. Being Bose particles, excitons can form a Bose-Einstein condensate. We study formation of two types of condensates. In first case both the electron and the hole forming the exciton are in the same layer (intralayer condensate), in the second case the electron and the hole are in different layers (interlayer condensate). We study how the condensates depend on the distance between layers and the mass of the quasiparticles in presence of a strong magnetic field. In order to take into account possible strong Coulomb interaction between electrons we use holographic appoach. The holographic model consists of two $D5$ branes embedded into anti de Sitter space. The condensates are described by geometric configuration of the branes. We show that the distance between layers at which interlayer condensate disappears decreases with quasiparticle mass.
