Details

Autor(en) / Beteiligte

• Bourjaily, Jacob L
• Heslop, Paul
• Tran, Vuong-Viet

Titel

Perturbation Theory at Eight Loops: Novel Structures and the Breakdown of Manifest Conformality in N=4 Supersymmetric Yang-Mills Theory

Ist Teil von

• Physical review letters, 2016-05, Vol.116 (19), p.191602-191602, Article 191602

Ort / Verlag

United States

Erscheinungsjahr

2016

Quelle

PROLA

Beschreibungen/Notizen

• We use the soft-collinear bootstrap to construct the 8-loop integrand for the 4-point amplitude and 4-stress-tensor correlation function in planar maximally supersymmetric Yang-Mills theory. Both have a unique representation in terms of planar, conformal integrands grouped according to a hidden symmetry discovered for correlation functions. The answer we find exposes a fundamental tension between manifest locality and planarity with manifest conformality not seen at lower loops. For the first time, the integrand must include terms that are finite even on-shell and terms that are divergent even off-shell (so-called pseudoconformal integrals). We describe these novelties and their consequences in this Letter, and we make the full correlator and amplitude available as part of the Supplemental Material.