发表机构
Leibniz Universität Hannover(汉诺威莱布尼茨大学)
机构由 AI 辅助整理,请以论文原文为准。AI 中文总结
该研究证明单个非阿贝尔任意子的超选择 sector 违反哈格对偶性,通过物理论证和 sector 理论证明,在 Levin-Wen 模型中实例化,还发现其基态无量子导引且违反近似哈格对偶性,反驳了相关猜想,表明存在哈格对偶性失效的物质有隙相。
AI 中文摘要
我们证明,描述单个非阿贝尔任意子的超选择 sector 违反哈格(Haag)对偶性,这等价于纯化的唯一性这一基本量子信息论原理。我们提供了一个简单的物理论证,以及利用 sector 理论的严格证明,并在 Levin-Wen 模型中具体实例化了我们的结果。我们还表明,相关的基态尽管是纯态,但不允许量子导引。最后,我们证明该基态违反近似哈格对偶性,反驳了所有有隙基态都满足该条件的猜想。我们的结果意味着,存在一些物质的有隙相,其中哈格对偶性在该相的每一点都失效。
英文摘要
We show that a superselction sector describing a single nonabelian anyon violates Haag duality, which is equivalent to the fundamental quantum-information theoretic principle of uniqueness of purifications. We provide a simple physics argument as well as a rigorous proof using sector theory, and instantiate our result concretely in Levin-Wen models. We also show that the associated ground state does not allow for quantum steering despite being a pure state. Finally, we show that this ground state violates approximate Haag duality, disproving the conjecture that all gapped ground states satisfy this condition. Our result implies that there are gapped phases of matter where Haag duality fails at every point in the phase.