Relaxing the cosmological constant

A non-zero cosmological constant allows massless gravitons to self-interact via a coupling of dimension three. If the cosmological constant is positive then the background geometry will subject gravitons to an enormous redshift. These two facts are together responsible for the severe infrared diverg...

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Bibliographic Details
Published inPhysics letters. B Vol. 301; no. 4; pp. 351 - 357
Main Authors Tsamis, N.C., Woodard, R.P.
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 11.03.1993
Elsevier Science
Subjects
Exact sciences and technology
Physics
Quantum chromodynamics
Specific theories and interaction models; particle systematics
The physics of elementary particles and fields
Cosmological constant
Quantum chromodynamic
Infrared divergence
Lifetime
Graviton
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Summary:A non-zero cosmological constant allows massless gravitons to self-interact via a coupling of dimension three. If the cosmological constant is positive then the background geometry will subject gravitons to an enormous redshift. These two facts are together responsible for the severe infrared divergences which detailed, explicit calculations [N.C. Tsamis and R.P. Woodard, Strong infrared effects in quantum gravity, preprint CRETE-92-17, UFIFT-92-24] reveal in loop corrections to the gravitational force law. We argue that, as a result, the cosmological interaction has a finite lifetime. Furthermore, this lifetime is consistent with inflation.
ISSN:0370-2693
1873-2445
DOI:10.1016/0370-2693(93)91162-G