Lanczos-adapted time evolution for open boundary quantum transport

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We increase the efficiency of a recently proposed time integration scheme for time dependent quantum transport by using the Lanczos method for time evolution. We illustrate our modified scheme in terms of a simple one dimensional model. Our results show that the Lanczos-adapted scheme gives a large increase in numerical efficiency, and is an advantageous route for numerical time integration in ab-initio treatment of open boundary quantum transport phenomena.
11 pages, 1 figure

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Mesoscale and Nanoscale Physics

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http://salesiana.dossiersoluciones.com/handle/123456789/166900

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0808.1643
 http://arxiv.org/abs/0808.1643

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arXiv