Anomalous scaling and spin-charge separation in coupled chains

Abstract

We use a bosonization approach to show that the three dimensional Coulomb interaction in coupled metallic chains leads to a Luttinger liquid for vanishing inter-chain hopping $t_{\perp }$, and to a Fermi liquid for any finite $t_{\perp }$. However, for small $t_{\perp }\ne 0$ the Greens-function satisfies a homogeneity relation with a non-trivial exponent ${\gamma }_{cb}$ in a large intermediate regime. Our results offer a simple explanation for the large values of ${\gamma }_{cb}$ inferred from recent photoemission data from quasi one-dimensional conductors and might have some relevance for the understanding of the unusual properties of the high-temperature superconductors.

compressed and uuencoded ps-file, including the figures, accepted for publication in Phys. Rev. Lett.

References in corpus (1)

• Wigner Crystal in One Dimension

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