PIRSA:15040178 Conference Quantum Fields and Strings

DOI10.48660/15040178

Conference/School: Superstring Perturbation Theory

Schlotterer, O. (2015). Multiloop SYM and supergravity amplitudes in pure spinor superspace. Perimeter Institute. https://pirsa.org/15040178

Schlotterer, Oliver. Multiloop SYM and supergravity amplitudes in pure spinor superspace. Perimeter Institute, Apr. 24, 2015, https://pirsa.org/15040178 

@misc{ pirsa_PIRSA:15040178,
  doi = {10.48660/15040178},
  url = {https://pirsa.org/15040178},
  author = {Schlotterer, Oliver},
  keywords = {Quantum Fields and Strings},
  language = {en},
  title = {Multiloop SYM and supergravity amplitudes in pure spinor superspace},
  publisher = {Perimeter Institute},
  year = {2015},
  month = {apr},
  note = {PIRSA:15040178 see, \url{https://pirsa.org}}
}

Abstract

We present a string-inspired method to construct supersymmetric loop integrands for scattering amplitudes in ten-dimensional SYM and supergravity. The kinematic dependence is described in pure spinor superspace and determined from the BRST-symmetry of the underlying pure spinor superstring. We focus on five-point examples at one- and two-loop order which satisfy the BCJ duality between color and kinematics. Hence, the supergravity integrands follow straightforwardly from a double copy construction of the cubic diagrams in SYM. Preliminary examples and open questions at three-loops are mentioned.

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