Zobrazeno 1 - 10
of 588
pro vyhledávání: '"Rivero, José"'
Publikováno v:
Phys. Rev. Lett. 131, 223801 (2023)
We present an approach to achieve zero modes in lattice models that do not rely on any symmetry or topology of the bulk, which are robust against disorder in the bulk of any type and strength. Such symmetry-free zero modes (SFZMs) are formed by attac
Externí odkaz:
http://arxiv.org/abs/2311.01566
Publikováno v:
Phys. Rev. B 107, 104106 (2023)
Recently, a Dirac exceptional point (EP) was reported in a non-Hermitian system. Unlike a Dirac point in Hermitian systems, this Dirac EP has coalesced eigenstates in addition to the degenerate energy. Also different from a typical EP, the two energy
Externí odkaz:
http://arxiv.org/abs/2303.07413
An imaginary gauge transformation is at the core of the non-Hermitian skin effect. Here we show that such a transformation can be performed in momentum space as well, which reveals that certain gain and loss modulated systems in their parity-time (PT
Externí odkaz:
http://arxiv.org/abs/2211.12567
Publikováno v:
In Regional Science Policy & Practice February 2025 17(2)
Autor:
Rivero, Jose D. H., Ge, Li
Publikováno v:
Phys. Rev. B 103, 195142 (2021)
A new perspective of the Green's function in a boundary value problem as the only eigenstate in an auxiliary formulation is introduced. In this treatment, the Green's function can be perceived as a defect state in the presence of a $\delta$-function
Externí odkaz:
http://arxiv.org/abs/2102.02737
Autor:
Rivero, Jose D. H., Ge, Li
Publikováno v:
Phys. Rev. Lett. 125, 083902 (2020)
Noether's theorem relates constants of motion to the symmetries of the system. Here we investigate a manifestation of Noether's theorem in non-Hermitian systems, where the inner product is defined differently from quantum mechanics. In this framework
Externí odkaz:
http://arxiv.org/abs/2101.09239
Autor:
Rivero, Jose D. H., Ge, Li
Publikováno v:
Phys. Rev. A 101, 063823 (2020)
Recently a type of robust exceptional points was found that is insensitive to the coupling disorder in the bulk. Here we show that a disparity emerges when the number of coupled cavities in this one-dimensional array changes from even to odd. The rob
Externí odkaz:
http://arxiv.org/abs/2005.10109