155 articles – 1965 Notices  [english version]
HAL : in2p3-00714909, version 1

Fiche détaillée  Récupérer au format
Nuclear Physics B 812 (2009) 488-524
Interacting String Multi-verses and Holographic Instabilities of Massive Gravity
E. Kiritsis1, 2, 3, V. Niarchos2

Products of large-N conformal field theories coupled by multi-trace interactions in diverse dimensions are used to define quantum multi-gravity (multi-string theory) on a union of (asymptotically) AdS spaces. One-loop effects generate a small O(1/N) mass for some of the gravitons. The boundary gauge theory and the AdS/CFT correspondence are used as guiding principles to study and draw conclusions on some of the well known problems of massive gravity - classical instabilities and strong coupling effects. We find examples of stable multi-graviton theories where the usual strong coupling effects of the scalar mode of the graviton are suppressed. Our examples require a fine tuning of the boundary conditions in AdS. Without it, the spacetime background backreacts in order to erase the effects of the graviton mass.
1 :  CPHT - Centre de Physique Théorique
2 :  Physics Department
3 :  APC - UMR 7164 - AstroParticule et Cosmologie
Physique/Physique des Hautes Energies - Théorie
Lien vers le texte intégral :