Integrable chain of electrons coupled with squeezed phonons |
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| Authors: | V A Ivanov M Ye Zhuravlev Y Murayama S Nakajima |
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| Institution: | (1) Institute for Molecular Science Okazaki, National Research Institute Center, Myodaiji, Okazaki 444, Japan;(2) Institute of General & Inorganic Chemistry of the Russian Academy of Sciences, 117907 Moscow, Russia;(3) Advanced Research Laboratory, Hitachi Ltd., Hatoyama, Saitama 350-03, Japan;(4) Tokai University, Shibuya-ku, Tokyo 151, Japan |
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| Abstract: | The exact wave function for a one-dimensional chain of electrons coupled with squeezed phonons is obtained. The ground state
energy and the gap in the electron spectrum are calculated. It is shown that there exists an optimal phonon number n
ph≠0 for the ground state of the system. The results are generalized for a system of correlated electrons.
Pis’ma Zh. éksp. Teor. Fiz. 64, No. 3, 140–145 (10 August 1996)
On leave from Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninskii prosp., GSP-1,
Moscow, 117907, Russia
Published in English in the original Russian journal. Edited by Steve Torstveit. |
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