Abstract
The electron-phonon interaction corresponding to the Holstein model (with Coulomb repulsion) is simulated in infinite dimensions using a novel quantum Monte Carlo algorithm. The thermodynamic phase diagram includes commensurate charge-density-wave phases, incommensurate charge-density-wave phases, and superconductivity. The crossover from a weak-coupling picture (where pairs both form and condense at T c ) to a strong-coupling picture (where preformed pairs condense at T c ) is illustrated with the onset of a double-well structure in the effective phonon potential.
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© 1994 Springer-Verlag Berlin Heidelberg
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Freericks, J.K., Jarrell, M. (1994). Simulation of the Electron-Phonon Interaction in Infinite Dimensions. In: Landau, D.P., Mon, K.K., Schüttler, HB. (eds) Computer Simulation Studies in Condensed-Matter Physics VII. Springer Proceedings in Physics, vol 78. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-79293-9_9
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DOI: https://doi.org/10.1007/978-3-642-79293-9_9
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