Regensburg 2000 – wissenschaftliches Programm

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TT: Tiefe Temperaturen

TT 17: Postersitzung II: Pinning und Vortexdynamik (1-8), Supraleitung: Theorie (9-13), Korrelierte Elektronen (14-48), Niederdimensionale Systeme (49-68), Quantenflüssigkeiten (69-75)

TT 17.47: Poster

Mittwoch, 29. März 2000, 14:30–18:00, A

Universal correlations of one-dimensional electrons in the gas phase — •F. Göhmann und V. I. Korepin — Physikalisches Institut, Universität Bayreuth, D-95440 Bayreuth

We consider dynamical correlation functions of short range interacting electrons in one dimension at finite temperature. Below a critical value of the chemical potential there is no Fermi surface anymore, and the system can no longer be described as a Luttinger liquid. Its low temperature themodynamics is that of an ideal gas. We identify the impenetrable electron gas model as a universal model for the gas phase and present exact and explicit expressions for the asymptotics of correlation at small temperatures, in the presence of a magnetic field.