Published November 1, 2010 | Version v1
Journal article Metadata-only

Self-protection of massive cosmological gravitons

Creators

  • 1. Physik-Department T30d, Technische Universität München, James-Franck-Straße, 85748 Garching (Germany)
  • 2. CP3-Origins, Centre for Particle Physics Phenomenology, University of Southern Denmark, Campusvej 55, 5230 Odense M (Denmark)
  • 3. Excellence Cluster Universe, Boltzmannstraße 2, 85748 Garching (Germany)

Description

Relevant deformations of gravity present an exciting window of opportunity to probe the rigidity of gravity on cosmological scales. For a single-graviton theory, the leading relevant deformation constitutes a graviton mass term. In this paper, we investigate the classical and quantum stability of massive cosmological gravitons on generic Friedman backgrounds. For a Universe expanding towards a de Sitter epoch, we find that massive cosmological gravitons are self-protected against unitarity violations by a strong coupling phenomenon

Availability note (English)

Available from http://dx.doi.org/10.1088/1475-7516/2010/11/018

Additional details

Identifiers

DOI
10.1088/1475-7516/2010/11/018;

Publishing Information

Journal Title
Journal of Cosmology and Astroparticle Physics
Journal Volume
2010
Journal Issue
11
Journal Page Range
p. 018
ISSN
1475-7516

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
45096733
Subject category
S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
Descriptors DEI
COSMOLOGY; DE SITTER GROUP; DE SITTER SPACE; DEFORMATION; GRAVITATION; GRAVITONS; INFLATIONARY UNIVERSE; REST MASS; STRONG-COUPLING MODEL; UNITARITY; UNIVERSE
Descriptors DEC
COSMOLOGICAL MODELS; ELEMENTARY PARTICLES; GRAVITATIONAL RADIATION; LIE GROUPS; MASS; MASSLESS PARTICLES; MATHEMATICAL MODELS; MATHEMATICAL SPACE; PARTICLE MODELS; POSTULATED PARTICLES; RADIATIONS; SPACE; SYMMETRY GROUPS