8 papers
Brane flows
Georgios Papadopoulos, Kostas Skenderis
Based on effective D-brane actions, we present a generalisation of the Ricci flow that includes the flow of a theory with a -form field strength for . This is a general…
Gravitational charges and radiation in asymptotically locally de Sitter spacetimes
Aaron Poole, Kostas Skenderis, Marika Taylor
We present a comprehensive discussion of gravitational charges and radiation in four-dimensional asymptotically locally de Sitter (AldS) spacetimes. Such spacetimes have compact sp…
A remarkably simple covariant graviton propagator in Anti-de Sitter spacetime
Radu N. Moga, Kostas Skenderis
We present remarkably simple covariant expressions for the graviton and ghost propagators in Anti-de Sitter (AdS) spacetime valid in any spacetime dimension. In gravity there is a…
Bulk-to-bulk photon propagator in AdS
Radu N. Moga, Kostas Skenderis
We study the photon bulk-to-bulk propagator in AdS in various gauges, including axial, Coulomb, and the standard covariant gauge. We compute the propagator using both momentum and…
AdS amplitudes as CFT correlators
Maximo Bañados, Ernesto Bianchi, Ivan Muñoz +1
We show that AdS amplitudes are CFT correlators to all orders in the loop expansion by showing that they obey the conformal Ward identities. In particular, we provide explicit form…
Flat space spinning massive amplitudes from momentum space CFT
Raffaele Marotta, Kostas Skenderis, Mritunjay Verma
We discuss the flat space limit of AdS using the momentum space representation of CFT correlators. The flat space limit involves sending the AdS radius and the dimensions of operat…