Lattice exciton-polaron problem by quantum Monte Carlo simulations

Details Lattice exciton-polaron problem by quantum Monte Carlo simulations Lattice exciton-polaron problem by quantum Monte Carlo simulations

2007-09-21

arxiv.org/abs/0709.3424v4

Phys. Rev. B 76, 184303 (2007)

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 5 figures

Scientific paper

10.1103/PhysRevB.76.184303

Exciton-polaron formation in one-dimensional lattice models with short or long-range carrier-phonon interaction is studied by quantum Monte Carlo simulations. Depending on the relative sign of electron and hole-phonon coupling, the exciton-polaron size increases or decreases with increasing interaction strength. Quantum phonon fluctuations determine the (exciton-)polaron size and yield translation-invariant states at all finite couplings.

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