De sitter brane gravity: From close-up to panorama

Maulik K. Parikh, Sergey N. Solodukhin

Research output: Contribution to journalArticle

25 Scopus citations

Abstract

We find explicitly the induced graviton propagator on de Sitter branes embedded in various five-dimensional spacetimes; de Sitter branes in AdS and Minkowski space are particular cases. By studying the structure of the momentum-space propagator, we are able to extract interesting physics, much of which is qualitatively different from that of flat branes. We find that (1) there can be a set of graviton-like particles which mediate brane gravity at different scales; (2) localized gravity can exist even on de Sitter branes in Minkowski space; (3) Kaluza-Klein modes also contribute to conventional 4D gravity for de Sitter branes in AdS; and (4) Newton's constant can vary considerably with scale. We comment on the implications for the effective cosmological constant.

Original languageEnglish (US)
Pages (from-to)384-393
Number of pages10
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume503
Issue number3-4
DOIs
StatePublished - Mar 29 2001
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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