Yun Yong Terh
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View article: Topological disclination states and charge fractionalization in a non-Hermitian lattice
Topological disclination states and charge fractionalization in a non-Hermitian lattice Open
We show that a non-Hermitian lattice with a disclination can host topological disclination states that are induced by on-site gain and loss. The disclination states are inherently non-Hermitian as they do not exist in the limit of zero gai…
View article: Dirac mass induced by optical gain and loss
Dirac mass induced by optical gain and loss Open
Mass is commonly regarded as an intrinsic property of matter, but modern physics reveals particle masses to have complex origins, such as the Higgs mechanism in high-energy physics. In crystal lattices such as graphene, relativistic Dirac …
View article: Scattering Dynamics and Boundary States of a Non-Hermitian Dirac Equation
Scattering Dynamics and Boundary States of a Non-Hermitian Dirac Equation Open
We study a non-Hermitian variant of the (2+1)-dimensional Dirac wave equation, which hosts a real energy spectrum with pairwise-orthogonal eigenstates. In the spatially uniform case, the Hamiltonian's non-Hermitian symmetries allow its eig…