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Approximate scaling relation for the anharmonic electron-phonon problem

J. K. Freericks·V. Zlatic·Mark Jarrell
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Abstract

An approximate scaling relation is found for the transition temperature to a charge-density-wave instability in the anharmonic electron-phonon problem, which maps a wide range of interaction strengths, anharmonicities, and phonon frequencies onto a common functional form. The relation employs the wave-function renormalization parameter and is valid even for systems that are not Fermi liquids.

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J. K. Freericks, V. Zlatic, Mark Jarrell. 1999-06-10. Approximate scaling relation for the anharmonic electron-phonon problem. https://doi.org/10.1103/physrevb.61.r838

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