论文标题
Z2通量的解剖结构
Anatomy of Z2 fluxes in anyon Fermi liquids and Bose condensates
论文作者
论文摘要
我们详细研究嵌入具有有限密度的状态的pi-频率的特性，它们形成了费米液体或Bose-Einstein冷凝物。通过在2D中采用最近开发的精确晶格氯化，我们证明了这种Pi-Flux仍然是完全脱落的准粒子，其在紧急费米子的费米液体中具有有限的能量成本，并与Z2量规场耦合。这种pi-flux伴随着筛分的费米子云，在带有抛物线分散剂的费米气体的情况下，它恰好结合了费米子孔的1/8。另外，在类似于弗里德尔振荡的Pi-Flux周围的液体周围还有长期的幂律振荡干扰。这些结果直接延续到正交金属中的Pi-Flux激发。相比之下，当Pi-Flux被耦合到Z2量规场的粒子的Bose-Einstein凝结物包围时，它会结合超流体的半涡体，并与对数能量能量成本差异变成边缘限制的激发。
We study in detail the properties of pi-fluxes embedded in a state with a finite density of anyons that form either a Fermi liquid or a Bose-Einstein condensate. By employing a recently developed exact lattice bosonization in 2D, we demonstrate that such pi-flux remains a fully deconfined quasiparticle with a finite energy cost in a Fermi liquid of emergent fermions coupled to a Z2 gauge field. This pi-flux is accompanied by a screening cloud of fermions, which in the case of a Fermi gas with a parabolic dispersion binds exactly 1/8 of a fermionic hole. In addition there is a long-ranged power-law oscillatory disturbance of the liquid surrounding the pi-flux akin to Friedel oscillations. These results carry over directly to the pi-flux excitations in orthogonal metals. In sharp contrast, when the pi-flux is surrounded by a Bose-Einstein condensate of particles coupled to a Z2 gauge field, it binds a superfluid half-vortex, becoming a marginally confined excitation with a logarithmic energy cost divergence.
