Zobrazeno 1 - 10
of 64
pro vyhledávání: '"Yang, Zhesen"'
In this work, we present a novel method called the complex frequency fingerprint (CFF) to detect the complex frequency Green's function, $G(\omega\in\mathbb{C})$, in a driven-dissipative system. By utilizing the CFF, we can measure the complex freque
Externí odkaz:
http://arxiv.org/abs/2411.12577
We present an explicit Bethe-ansatz wavefunction to a 1D spin-$\frac{1}{2}$ interacting fermion system, manifesting a many-body resonance resulting from the interplay between interaction and non-Hermitian spin-orbit coupling. In the dilute limit, the
Externí odkaz:
http://arxiv.org/abs/2409.04112
Publikováno v:
Phys. Rev. B 109, 165127 (2024)
In this paper, we establish an effective edge theory to characterize non-Hermitian edge-skin modes in higher dimensions. We begin by proposing a bulk projection criterion to straightforwardly identify the localized edges of skin modes. Through an exa
Externí odkaz:
http://arxiv.org/abs/2309.03950
Since the discovery of cuprate, the origin of high-T$_c$ superconductivity has been an outstanding puzzle. Recently, high-T$_c$ superconductivity was observed in a bilayer nickelate La$_3$Ni$_2$O$_7$ under pressure, whose structure hosts the apical o
Externí odkaz:
http://arxiv.org/abs/2306.07275
Publikováno v:
Science Bulletin, 2023, 68(20)
The non-Hermitian skin effect is a distinctive phenomenon in non-Hermitian systems, which manifests as the anomalous localization of bulk states at the boundary. To understand the physical origin of the non-Hermitian skin effect, a bulk band characte
Externí odkaz:
http://arxiv.org/abs/2303.11109
Publikováno v:
Phys. Rev. Lett. 131, 036402 (2023)
In this paper, we introduce the concept of dynamical degeneracy splitting to describe the anisotropic decay behaviors in non-Hermitian systems. We demonstrate that systems with dynamical degeneracy splitting exhibit two distinctive features: (i) the
Externí odkaz:
http://arxiv.org/abs/2211.07783
Publikováno v:
Physical Review A (106), L061302 (2022)
Non-Hermitian skin effect, which refers to the phenomenon that an extensive number of eigenstates are localized at the boundary, has been widely studied in lattice models and experimentally observed in several classical systems. In this work, we pred
Externí odkaz:
http://arxiv.org/abs/2111.04220
Publikováno v:
Phys. Rev. B 106, 045126 (2022)
The Nielsen-Ninomiya Theorem has set up a ground rule for the minimal number of the topological points in a Brillouin zone. Notably, in the 2D Brillouin zone, chiral symmetry and space-time inversion symmetry can properly define topological invariant
Externí odkaz:
http://arxiv.org/abs/2108.04534
Publikováno v:
Nat Commun 13, 2496 (2022)
Skin effect, experimentally discovered in one dimension, describes the physical phenomenon that on an open chain, an extensive number of eigenstates of a non-Hermitian hamiltonian are localized at the end(s) of the chain. Here in two and higher dimen
Externí odkaz:
http://arxiv.org/abs/2102.05059
Autor:
Yang, Zhesen
In conventional Hermitian systems with the open boundary condition, Bloch's theorem is perturbatively broken down, which means although the crystal momentum is not a good quantum number, the eigenstates are the superposition of several extended Bloch
Externí odkaz:
http://arxiv.org/abs/2012.03333