Výsledky vyhledávání - "Non-hermiticity"

Akademický článek

On the presence of electric dipole and toroidal moments in non-Hermitian QED

Autor: R. Bufalo, Nathan B. Xavier

Publikováno v: Physics Letters B, Vol 860, Iss , Pp 139167- (2025)

We study in this paper non-relativistic properties of the non-hermitian and PT symmetric QED, in special the Pauli-Schrödinger Hamiltonian. It is shown that the scattering potential computed in terms of the Born approximation receives phenomenologic

Externí odkaz: https://doaj.org/article/e8c4fe6ce9524e8e987ee48e3ec9126e

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Akademický článek

Topological phase transitions in the non-Hermitian SSH model with long-range hopping terms induced by gains and losses

Autor: Weiwei Zhang, Qipeng Cai, Liangwei Lin, Yiguang Xu, Haipeng Yu, Xiaosheng Wang, Xiaohong Fang, Zixuan Chen, Yicai Zhang, Shengcan Ma, Chaofei Liu

Publikováno v: Results in Physics, Vol 61, Iss , Pp 107758- (2024)

The latest progress in the one-dimensional chain SSH model provide the basic understanding of non-Hermitian topological phases. By periodically introducing the gains and losses of imaginary potential ig,-ig,-ig,ig with anti-PT symmetry, we have inves

Externí odkaz: https://doaj.org/article/91ed3ed26ede47c1b185c71eef996057

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Akademický článek

Hermitian and non-hermitian higher-order topological states in mechanical metamaterials

Autor: Tian, Yuping ^a, Tan, Zhuhua ^{b, ⁎⁎}, Zhang, Wei ^{a, ⁎}

Publikováno v: In European Journal of Mechanics / A Solids July-August 2024 106

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Akademický článek

Topological phase transitions in the non-Hermitian SSH model with long-range hopping terms induced by gains and losses

Autor: Zhang, Weiwei ^a, Cai, Qipeng ^a, Lin, Liangwei ^a, Xu, Yiguang ^a, Yu, Haipeng ^a, Wang, Xiaosheng ^a, Fang, Xiaohong ^a, Chen, Zixuan ^a, Zhang, Yicai ^b, Ma, Shengcan ^a, Liu, Chaofei ^{a, ⁎}

Publikováno v: In Results in Physics June 2024 61

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Akademický článek

Complex Berry curvature and complex energy band structures in non-Hermitian graphene model

Autor: Chao Wu, Annan Fan, Shi-Dong Liang

Publikováno v: AAPPS Bulletin, Vol 32, Iss 1, Pp 1-10 (2022)

Abstract Non-Hermitian quantum systems exhibit many novel physical properties of quantum states. We consider a non-Hermtian graphene model based on the tight-binding approximation with the coupling of the graphene and the substrate. We analyze the co

Externí odkaz: https://doaj.org/article/c9eef002971a4185b37a051e8eecd1bd

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