1995/06/30 by P. W. Anderson, Philip W. Anderson, Anderson, P. W.
Chemical Engineering · Physics and Astronomy · #Condensed Matter (cond-mat) #FOS: Physical sciences #Theoretical and Computational Physics #Thermodynamic properties of mixtures #cond-mat
paper · pdf · doi:10.48550/arxiv.cond-mat/9506140
3 Figures are available upon request from <[email protected]> 6 pages, Tex paper
arxiv created 1995/06/30 · openalex publication_date 1995/06/30 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Measurements of infrared conductivity in the normal state of the cuprate layer metals show a characteristic behavior in the plane of the layers which is in essential agreement among many experiments. A simple parametrization of this behavior, proposed originally by Collins and Schlesinger, and exploited by N. Bontemps and her group, which gives an adequate fit over frequencies from a few hundred cm-1 to >5000 cm-1, is that the phase angle of the complex conductivity is independent of frequency. This fit is shown to be a natural consequence of Luttinger Liquid theory with charge-spin separation, and determines the exponent of the singularity at the Fermi surface to be ∼ .15± .05.