Probing the gravitational wave signature from cosmic phase transitions at different scales

Lawrence Krauss, Katherine Jones-Smith, Harsh Mathur, James Dent

Research output: Contribution to journalArticle

12 Scopus citations

Abstract

We present a new signature by which one could potentially discriminate between a spectrum of gravitational radiation generated by a self-ordering scalar field vs that of inflation, specifically a comparison of the magnitude of a flat spectrum at frequencies probed by future direct detection experiments to the magnitude of a possible polarization signal in the cosmic microwave background radiation. In the process we clarify several issues related to the proper calculation of such modes, focusing on the effect of post-horizon- crossing evolution.

Original languageEnglish (US)
Article number044001
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume82
Issue number4
DOIs
StatePublished - Aug 4 2010

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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