Double copy of 3D Chern-Simons theory and 6D Kodaira-Spencer gravity

Apr 25, 2024
20 pages
Published in:
  • Phys.Rev.D 110 (2024) 4, 045024
  • Published: Aug 15, 2024
e-Print:
DOI:
Report number:
  • HU-EP-24/12-RTG

Citations per year

202320242025093
Abstract: (APS)
We apply an algebraic double copy construction of gravity from gauge theory to three-dimensional (3D) Chern-Simons theory. The kinematic algebra K is the 3D de Rham complex of forms equipped, for a choice of metric, with a graded Lie algebra that is equivalent to the Schouten-Nijenhuis bracket on polyvector fields. The double copied gravity is defined on a subspace of KK¯ and yields a topological double field theory for a generalized metric perturbation and two 2-forms. This local and gauge invariant theory is non-Lagrangian but can be rendered Lagrangian by abandoning locality. Upon fixing a gauge this reduces to the double copy of Chern-Simons theory previously proposed by Ben-Shahar and Johansson. Furthermore, using complex coordinates in C3 this theory is related to six-dimensional (6D) Kodaira-Spencer gravity in that truncating the two 2-forms and one equation yields the Kodaira-Spencer equations on a 3D real slice of C3. The full 6D Kodaira-Spencer theory can instead be obtained as a consistent truncation of a chiral double copy.
Note:
  • 20 pages, published version
  • space-time: perturbation
  • dimension: 6
  • invariance: gauge
  • dimension: 3
  • algebra: Lie
  • metric: perturbation
  • gravitation
  • Chern-Simons term
  • graded
  • topological