论文标题
相互作用的基塔夫链中的八个vertex临界
Eight-vertex criticality in the interacting Kitaev chain
论文作者
论文摘要
我们表明，将配对和排斥融入对1D无旋转费的描述，例如在域壁理论中，或相互作用的Kitaev链中，导致了足够强的排斥力，以达到八个Vertex普遍性的临界点的一系列临界点，使浮动阶段与出现的u（1）对称性相称。对于最近的邻居排斥和配对，可以从$ j_x = -j_z $的XYZ链中从Baxter的精确解决方案中提取的关键指数的变化完全证实了整个相图的广泛dmrg模拟，并且显示了整个相图的定性特征，并且显示出具有精确形式的相互作用。
We show that including pairing and repulsion into the description of 1D spinless fermions, as in the domain wall theory of commensurate melting or the interacting Kitaev chain, leads, for strong enough repulsion, to a line of critical points in the eight vertex universality class terminating floating phases with emergent U(1) symmetry. For nearest-neighbor repulsion and pairing, the variation of the critical exponents along the line that can be extracted from Baxter's exact solution of the XYZ chain at $J_x=-J_z$ is fully confirmed by extensive DMRG simulations of the entire phase diagram, and the qualitative features of the phase diagram are shown to be independent of the precise form of the interactions.
