Translation-invariant bipolarons and the problem of high-temperature superconductivity

V. D. Lakhno

doi:10.1016/j.ssc.2012.01.013

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arXiv · 1301.5805

Translation-invariant bipolarons and the problem of high-temperature superconductivity

V. D. Lakhno

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Abstract

It is shown that the bipolaron ground state is described by a delocalized wave function. For a two-parameter wave function, the lowest variation estimate of the ground state energy in the strong coupling limit is found to be $E=- 0,414125 α^2$. This is much lower than that derived with the use of the localized bipolaron wave function. The results obtained testify to the possibility of a bipolaron mechanism of high-temperature superconductivity.

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V. D. Lakhno. 2013-01-24. Translation-invariant bipolarons and the problem of high-temperature superconductivity. https://doi.org/10.1016/j.ssc.2012.01.013

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