Bits, matrices and 1/N

Research output: Contribution to journalArticle

18 Scopus citations

Abstract

We propose a simple string bit formalism for interacting strings in a plane wave background, in terms of supersymmetric quantum mechanics with a symmetric product target-space. We construct the light-cone supersymmetry generators and hamiltonian at finite string coupling. We find a precise match between string amplitudes and the non-planar corrections to the correlation functions of BMN operators computed from gauge theory, and conjecture that this correspondence extends to all orders in perturbation theory. We also give a simple RG explanation for why the effective string coupling is g2 = J 2/N instead of gs = gym2.

Original languageEnglish (US)
Pages (from-to)1217-1230
Number of pages14
JournalJournal of High Energy Physics
Volume7
Issue number12
DOIs
StatePublished - Dec 1 2003

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Keywords

  • 1/N Expansion
  • Penrose limit and pp-wave background

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