Holography as homotopy

Jul 16, 2023
50 pages
Published in:
  • JHEP 09 (2024) 161
  • Published: Sep 24, 2024
e-Print:
Report number:
  • HU-EP-23/22

Citations per year

202220232024023
Abstract: (Springer)
We give an interpretation of holography in the form of the AdS/CFT correspondence in terms of homotopy algebras. A field theory such as a bulk gravity theory can be viewed as a homotopy Lie or L_{∞} algebra. We extend this dictionary to theories defined on manifolds with a boundary, including the conformal boundary of AdS, taking into account the cyclic structure needed to define an action with the correct boundary terms. Projecting fields to their boundary values then defines a homotopy retract, which in turn implies that the cyclic L_{∞} algebra of the bulk theory is equivalent, up to homotopy, to a cyclic L_{∞} algebra on the boundary. The resulting action is the ‘on-shell action’ conventionally computed via Witten diagrams that, according to AdS/CFT, yields the generating functional for the correlation functions of the dual CFT. These results are established with the help of new techniques regarding the homotopy transfer of cyclic L_{∞} algebras.
Note:
  • 50 pages, 1 figure. v2: references added, typo corrected
  • AdS-CFT Correspondence
  • BRST Quantization
  • field theory: conformal
  • homotopy
  • algebra
  • cyclic
  • holography
  • AdS/CFT correspondence
  • Lie
  • duality