在1996年提出的Hatano-Nelson模型,最开始提出是为了研究超导体内的局域相变,哈密顿量可以写成,\begin{...
Anderson ModelPeriodic PotentialWe study a generalisation of the Hatano-Nelson Hamiltonian in which a periodic modulation of the site energies is present in addition to the usual random distribution. The system can then become localized by disorder or develop a band gap, and the eigenspectrum shows...
我们描述开放边界的体系,也不能采用周期形式的哈密顿量,二者差别很大,作为对比,中间的图是厄米情形下...
We explore the near adiabatic dynamics in a non-Hermitian quantum many-body system by investigating a finite-time ramp of the imaginary vector potential in the interacting Hatano-Nelson model. The excess energy, the Loschmidt echo, and the density imbalance are analyzed using bosonization and exact...
We obtain a duality between a generalized non-Hermitian Hatano-Nelson model in d-dimensional flat space and a Hermitian system in 2d-dimensional curved space, and give the metric of the curved space analytically. This duality shows the possibility of non-Hermiticity coming from the metric of the...