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...
Autores principales: | , , |
---|---|
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 |
_version_ | 1780920194945777664 |
---|---|
author | Dvali, Gia Folkerts, Sarah Germani, Cristiano |
author_facet | Dvali, Gia Folkerts, Sarah Germani, Cristiano |
author_sort | Dvali, Gia |
collection | CERN |
description | 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. |
format | info:eu-repo/semantics/article |
id | cern-1270216 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2010 |
publisher | Phys. Rev. D |
record_format | invenio |
spelling | cern-12702162023-03-14T16:42:27Z doi:10.1103/PhysRevD.84.024039 http://cds.cern.ch/record/1270216 eng Dvali, Gia Folkerts, Sarah Germani, Cristiano Physics of Trans-Planckian Gravity Particle Physics - Theory 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. We study the field theoretical description of a generic theory of gravity flowing to Einstein General Relativity in IR. We prove that, if ghost-free, in the weakly coupled regime such a theory can never become weaker than General Relativity. Using this fact, as a byproduct, we suggest that in a ghost-free theory of gravity 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 described by the light IR quantum degrees of freedom and gives exponentially-suppressed contributions to virtual processes. In this picture Einstein gravity is UV self-complete, although not Wilsonian, and sub-Planckian distances are unobservable in any healthy theory of gravity. We then finally show that this UV/IR correspondence puts a severe constraint on any attempt of conventional Wilsonian UV-completion of trans-Planckian gravity. Specifically, there is no well-defined energy domain in which gravity could become asymptotically weak or safe. info:eu-repo/grantAgreement/EC/FP7/237920 info:eu-repo/semantics/openAccess Education Level info:eu-repo/semantics/article info:eu-repo/grantAgreement/EC/FP7/226371 info:eu-repo/semantics/openAccess Education Level info:eu-repo/semantics/article http://cds.cern.ch/record/1270216 Phys. Rev. D Phys. Rev. D, (2011) pp. 024039 2010-06-08 |
spellingShingle | Particle Physics - Theory Dvali, Gia Folkerts, Sarah Germani, Cristiano Physics of Trans-Planckian Gravity |
title | Physics of Trans-Planckian Gravity |
title_full | Physics of Trans-Planckian Gravity |
title_fullStr | Physics of Trans-Planckian Gravity |
title_full_unstemmed | Physics of Trans-Planckian Gravity |
title_short | Physics of Trans-Planckian Gravity |
title_sort | physics of trans-planckian gravity |
topic | Particle Physics - Theory |
url | https://dx.doi.org/10.1103/PhysRevD.84.024039 http://cds.cern.ch/record/1270216 http://cds.cern.ch/record/1270216 |
work_keys_str_mv | AT dvaligia physicsoftransplanckiangravity AT folkertssarah physicsoftransplanckiangravity AT germanicristiano physicsoftransplanckiangravity |