A grassmannian étude in NMHV minors

  • Dhritiman Nandan
  • Anastasia Volovich
  • Congkao Wen
Article

Abstract

Arkani-Hamed, Cachazo, Cheung and Kaplan have proposed a Grassmannian formulation for the S-matrix of \( \mathcal{N} = 4 \) Yang-Mills as an integral over link variables. In parallel work, the connected prescription for computing tree amplitudes in Witten’s twistor string theory has also been written in terms of link variables. In this paper we extend the six-and seven-point results of arXiv:0909.0229 and arXiv:0909.0499 by providing a simple analytic proof of the equivalence between the two formulas for all tree-level NMHV superamplitudes. Also we note that a simple deformation of the connected prescription integrand gives directly the ACCK Grassmannian integrand in the limit when the deformation parameters equal zero.

Keywords

Supersymmetric gauge theory Duality in Gauge Field Theories String Duality 

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Copyright information

© SISSA, Trieste, Italy 2010

Authors and Affiliations

  • Dhritiman Nandan
    • 1
  • Anastasia Volovich
    • 1
  • Congkao Wen
    • 1
  1. 1.Brown UniversityProvidenceU.S.A.

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