论文标题
从耦合到环境的特殊自旋液体
Exceptional Spin Liquids from Couplings to the Environment
论文作者
论文摘要
当耦合到环境时，我们建立了一种定性新型的旋转液体的外观，并具有出色的特殊点。我们考虑了一个开放的Kitaev Honeycomb模型的开放系统，该模型通常耦合到外部环境。在扩展的参数制度中，来自原始模型的新兴Majorana费米的狄拉克点被分为特殊点，而Fermi Arcs将它们连接起来。与需要时间反向对称性的蜂窝模型的原始无间隙相对形成鲜明对比，这种新阶段在所有扰动上都是稳定的。该系统还对非铁皮皮肤效应产生的边界条件显示出较大的敏感性，并带有Telltale实验后果。我们的结果表明，由于与环境不可避免的耦合，开放系统中新型旋转液体的出现可能是通常实现的。
We establish the appearance of a qualitatively new type of spin liquid with emergent exceptional points when coupling to the environment. We consider an open system of the Kitaev honeycomb model generically coupled to an external environment. In extended parameter regimes, the Dirac points of the emergent Majorana fermions from the original model are split into exceptional points with Fermi arcs connecting them. In glaring contrast to the original gapless phase of the honeycomb model which requires time-reversal symmetry, this new phase is stable against all perturbations. The system also displays a large sensitivity to boundary conditions resulting from the non-Hermitian skin effect with telltale experimental consequences. Our results point to the emergence of new classes of spin liquids in open systems which might be generically realized due to unavoidable couplings with the environment.
