English

Strings in flat space and pp waves from ${\cal N}=4$ Super Yang Mills

High Energy Physics - Theory 2009-11-07 v3

Abstract

We explain how the string spectrum in flat space and pp-waves arises from the large NN limit, at fixed gYM2g^2_{YM}, of U(N) N=4{\cal N} =4 super Yang Mills. We reproduce the spectrum by summing a subset of the planar Feynman diagrams. We give a heuristic argument for why we can neglect other diagrams. We also discuss some other aspects of pp-waves and we present a matrix model associated to the DLCQ description of the maximally supersymmetric eleven dimensional pp-waves.

Keywords

Cite

@article{arxiv.hep-th/0202021,
  title  = {Strings in flat space and pp waves from ${\cal N}=4$ Super Yang Mills},
  author = {David Berenstein and Juan Maldacena and Horatiu Nastase},
  journal= {arXiv preprint arXiv:hep-th/0202021},
  year   = {2009}
}

Comments

36 pages, 5 figures. v3: minor typos corrected, references added

R2 v1 2026-07-22T15:09:00.754Z