论文标题
由现场耗散诱导的非铁皮皮肤模式和手性隧道效果
Non-Hermitian skin modes induced by on-site dissipations and chiral tunneling effect
论文作者
论文摘要
在本文中，我们研究了现场耗散可以诱导非炎症系统中的非炎症皮肤模式的条件。当最初的赫米尔顿式哈密顿人具有无旋转的时间反转对称性时，就不可能拥有皮肤模式。另一方面，如果Hermitian Hamiltonian具有稀疏的时间转换对称性，则在某些情况下，现场耗散可以诱导皮肤模式。作为一个具体的例子，我们采用米勒模型来说明我们的结果。此外，我们预测可以通过手性隧道效应检测到皮肤模式，即隧道有利于皮肤模式所定位的方向。我们的工作揭示了皮肤模式出现的无关定理，并为搜索具有皮肤模式的量子系统并研究其新颖的身体反应铺平了道路。
In this paper, we study the conditions under which on-site dissipations can induce non-Hermitian skin modes in non-Hermitian systems. When the original Hermitian Hamiltonian has spinless time-reversal symmetry, it is impossible to have skin modes; on the other hand, if the Hermitian Hamiltonian has spinful time-reversal symmetry, skin modes can be induced by on-site dissipations under certain circumstance. As a concrete example, we employ the Rice-Mele model to illustrate our results. Furthermore, we predict that the skin modes can be detected by the chiral tunneling effect, that is, the tunneling favors the direction where the skin modes are localized. Our work reveals a no-go theorem for the emergence of skin modes, and paves the way for searching for quantum systems with skin modes and studying their novel physical responses.
