Superlight small bipolarons in the presence of strong Coulomb repulsion
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Superlight small bipolarons in the presence of a strong Coulomb repulsion.
We study a lattice bipolaron on a staggered triangular ladder and triangular and hexagonal lattices with both long-range electron-phonon interaction and strong Coulomb repulsion using a novel continuous-time quantum Monte Carlo algorithm to solve the two-particle Coulomb-Fröhlich model. The algorithm is preceded by an exact integration over phonon degrees of freedom, and as such is extremely ef...
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