Gauge invariant double copy of Yang-Mills theory: The quartic theory

Dec 8, 2022
39 pages
Published in:
  • Phys.Rev.D 107 (2023) 12, 126015
  • Published: Jun 15, 2023
e-Print:
DOI:
Report number:
  • HU-EP-22/41-RTG

Citations per year

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Abstract: (APS)
We give an explicit gauge invariant, off-shell, and local double copy construction of gravity from Yang-Mills theory to quartic order. To this end we use the framework of homotopy algebras, and we identify a rich new algebraic structure associated with color-stripped Yang-Mills theory. This algebra, which is a generalization of a Batalin-Vilkovisky algebra, is the underlying structure necessary for double copy. We give a self-contained introduction into these algebras by illustrating them for Chern-Simons theory in three dimensions. We then construct N=0 supergravity in the form of double field theory in terms of the algebraic Yang-Mills building blocks to quartic order in interactions. As applications of the same universal formula, we rederive the four-graviton scattering amplitude and compute a chiral form of the Courant algebroid gauge structure of double field theory.
Note:
  • 30 pages plus appendix and references. Published version
  • gauge field theory: Yang-Mills
  • invariance: gauge
  • off-shell
  • double field theory
  • homotopy
  • supergravity
  • graviton: scattering amplitude
  • Chern-Simons term
  • algebra: Batalin-Vilkovisky