Cargando…

Physics of Trans-Planckian Gravity

We study aspects of the phenomenon of gravitational UV-self-completeness and its implications for deformations of Einstein gravity. In a ghost-free theory flowing to Einstein gravity in the IR trans-Planckian propagating quantum degrees of freedom cannot exist. The only physical meaning of a trans-P...

Descripción completa

Detalles Bibliográficos
Autores principales: Dvali, Gia, Folkerts, Sarah, Germani, Cristiano
Formato: info:eu-repo/semantics/article
Lenguaje:eng
Publicado: Phys. Rev. D 2010
Materias:
Acceso en línea:https://dx.doi.org/10.1103/PhysRevD.84.024039
http://cds.cern.ch/record/1270216
Descripción
Sumario:We study aspects of the phenomenon of gravitational UV-self-completeness and its implications for deformations of Einstein gravity. In a ghost-free theory flowing to Einstein gravity in the IR trans-Planckian propagating quantum degrees of freedom cannot exist. The only physical meaning of a trans-Planckian pole is the one of a classical state (Black Hole) which is fully described by the light IR quantum degrees of freedom and gives exponentially-suppressed contributions to virtual processes. In this sense Einstein gravity is UV self-complete, although not Wilsonian. We show that this UV/IR correspondence puts a severe constraint on any attempt of conventional Wilsonian UV-completion of trans-Planckian gravity. In particular, there is no well-defined energy domain in which gravity could become asymptotically weak or safe.