Berlin 2008 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 32: Correlated Electrons: Poster Session

TT 32.47: Poster

Donnerstag, 28. Februar 2008, 14:00–18:00, Poster B

Dynamical properties of the one-dimensional Holstein model — •Peter Pippan and Hans Gerd Evertz — TU Graz, Austria

We study the phonon dynamics of the one-dimensional Holstein model of spinless fermions. Using cluster loop updates in spin space and a phonon integration in Fourier space, we employ a QMC method with hardly any auto correlations even at temperatures close to zero. We present precise data for the phonon spectral function in both the metallic luttinger liquid and the insulating charge density wave phase for a wide range of phonon frequencies.