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Spin transport in non-Hermitian quantum systems

Lima, Leonardo S

Scientific reports, 2023-07, Vol.13 (1), p.11112-11112, Article 11112 [Periódico revisado por pares]

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Título:
Spin transport in non-Hermitian quantum systems
Autor: Lima, Leonardo S
Assuntos: Conductivity ; Phase transitions ; Quantum physics
É parte de: Scientific reports, 2023-07, Vol.13 (1), p.11112-11112, Article 11112
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
Descrição: Transport in non-Hermitian quantum systems is studied. The goal is a better understanding of transport in non-Hermitian systems like the Lieb lattice due to its flat bands and the integrability of the Ising chain which allows transport in that model to be computed analytically. This is a very special feature that is not present in a generic non-Hermitian system. We obtain the behaviour of the spin conductivity as a function of the non-Hermitian parameters of each system with aim to verify the influence of variation them on conductivity. For all models analyzed: Ising model as well as noninteracting fermion models, we obtain a little influence of the non-Hermitian parameters on conductivity and thus, a small effect over transport coefficients. Furthermore, we obtain an influence of opening of the gap in the spectrum in these models on longitudinal conductivity as well.
Editor: England: Nature Publishing Group
Idioma: Inglês

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