English

Supergravity limit of genus two modular graph functions in the worldline formalism

High Energy Physics - Theory 2018-06-22 v2

Abstract

We consider the contributions upto the D10R4D^{10} \mathcal{R}^4 terms in the low momentum expansion of the two loop four graviton amplitude in maximal supergravity that arise in the field theory limit of genus two modular graph functions that result from the low momentum expansion of the four graviton amplitude in toroidally compactified type II string theory, using the worldline formalism of the first quantized superparticle. The expression for the two loop supergravity amplitude in the worldline formalism allows us to obtain contributions from the individual graphs, unlike the expression for the same amplitude obtained using unitarity cuts which only gives the total contribution from the sum of all the graphs. Our two loop analysis is field theoretic, and does not make explicit use of the genus two string amplitude.

Keywords

Cite

@article{arxiv.1803.08329,
  title  = {Supergravity limit of genus two modular graph functions in the worldline formalism},
  author = {Anirban Basu},
  journal= {arXiv preprint arXiv:1803.08329},
  year   = {2018}
}

Comments

19 pages, 5 figures, LaTeX, v2: supersedes published version