paper

Planar N=4 Gauge Theory and the Hubbard Model

arXiv:hep-th/0512077 · doi:10.1088/1126-6708/2006/03/018

Abstract

Recently it was established that a certain integrable long-range spin chain describes the dilatation operator of N=4 gauge theory in the su(2) sector to at least three-loop order, while exhibiting BMN scaling to all orders in perturbation theory. Here we identify this spin chain as an approximation to an integrable short-ranged model of strongly correlated electrons: The Hubbard model.

35 pages, 2 figures; v2: typos and references fixed, published version

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