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cond-mat.supr-con2000★ 19 cited
Small Bipolarons in the 2-dimensional Holstein-Hubbard Model. II Quantum Bipolarons
Laurent Proville, Serge Aubry
We study the effective mass of the bipolarons and essentially the possibility to get both light and strongly bound bipolarons in the Holstein-Hubbard model and some variations in t…
cond-mat.supr-con2000★ 47 cited
Small Bipolarons in the 2-dimensional Holstein-Hubbard Model. I The Adiabatic Limit
Laurent Proville, Serge Aubry
The spatially localized bound states of two electrons in the adiabatic two-dimensional Holstein-Hubbard model on a square lattice are investigated both numerically and analytically…