The quantum Ising model: finite sums and hyperbolic functions

We derive exact closed-form expressions for several sums leading to hyperbolic functions and discuss their applicability for studies of finite-size Ising spin chains. We show how they immediately lead to closed-form expressions for both fidelity susceptibility characterizing the quantum critical poi...

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Detalles Bibliográficos
Autor principal: Damski, Bogdan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2015
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4626794/
https://www.ncbi.nlm.nih.gov/pubmed/26514674
http://dx.doi.org/10.1038/srep15779

Internet

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4626794/
https://www.ncbi.nlm.nih.gov/pubmed/26514674
http://dx.doi.org/10.1038/srep15779

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