The structure of essential spectra and discrete spectrum of four-electron systems in the Hubbard model in a singlet state
- Authors: Tashpulatov S.M.1
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Affiliations:
- National University of Republic of Uzbekistan, Named by Mirzo Ulugbek, Faculty of Physics
- Issue: Vol 38, No 3 (2017)
- Pages: 530-541
- Section: Article
- URL: https://journals.rcsi.science/1995-0802/article/view/199390
- DOI: https://doi.org/10.1134/S1995080217030246
- ID: 199390
Cite item
Abstract
We study the spectral properties of four-electron systems in the Hubbard model in the quintet and singlet states. We proved the essential spectra of the four-electron systems in the quintet state is a single segment, and four-electron anti-bound states or four-electron bound states is absent. In the system exists two four-electron singlet states, and they are different origins. In the singlet states the essential spectra of four-electron systems is consists of the union no more three segments. Furthermore, in the system exists no more one four-electron anti-bound states or no more one bound states.
About the authors
S. M. Tashpulatov
National University of Republic of Uzbekistan, Named by Mirzo Ulugbek, Faculty of Physics
Author for correspondence.
Email: sadullatashpulatov@yandex.ru
Uzbekistan, Tashkent