Cosmology and spacetime symmetries
arXiv:hep-ph/0508316 · doi:10.1142/9789812774439_0032
Abstract
Cosmological models often contain scalar fields, which can acquire global nonzero expectation values that change with the comoving time. Among the possible consequences of these scalar-field backgrounds, an accelerated cosmological expansion, varying couplings, and spacetime-symmetry violations have recently received considerable attention. This talk studies the interplay of these three key signatures of cosmologically varying scalars within a supergravity framework.
arXiv comment5 pages; Prepared for New Worlds in Astroparticle Physics, Faro, Portugal, January 8-10, 2005