The asymptotic spectrum of the N = 4 super-Yang-Mills spin chain
Journal
Journal of High Energy Physics
Journal Volume
2007
Journal Issue
3
Date Issued
2007
Author(s)
Abstract
In this paper we discuss the asymptotic spectrum of the spin chain description of planar ≤ 4 SUSY Yang-Mills. The states appearing in the spectrum belong to irreducible representations of the unbroken supersymmetry SU(2|2) × SU(2|2) with non-trivial extra central extensions. The elementary magnon corresponds to the bifundamental representation while boundstates of Q magnons form a certain short representation of dimension 16Q2. Generalising the Beisert's analysis of the Q ≤ 1 case, we derive the exact dispersion relation for these states by purely group theoretic means. © SISSA 2007.
Type
journal article