Long-wavelength modes of cosmological scalar fields

2005/10/18 by Marcin Jankiewicz, Thomas W. Kephart · 1 citation
Mathematics · Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology #Cosmology and Gravitation Theories #Geometry #Massless particle #Mathematical physics #Mathematics #Particle physics theoretical and experimental studies #Physics #Quantum electrodynamics #Quantum mechanics #Scalar (mathematics) #Scalar field #Theoretical physics #WKB approximation #Wavelength #astro-ph #gr-qc #hep-ph

paper · pdf · doi:10.1103/physrevd.73.123514

published as Phys.Rev. D73 (2006) 123514 · 10 pages, 10 figures, several stylistic improvements

arxiv created 2005/10/18 · openalex publication_date 2006/06/12 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We give a numerical analysis of long-wavelength modes in the WKB approximation of cosmological scalar fields coupled to gravity via \ensuremathξ\ensuremathφ²R. Massless fields are coupled conformally at \ensuremathξ=1/6. Conformality can be preserved for fields of nonzero mass by shifting \ensuremathξ. We discuss implications for density perturbations.

Citations

• Constraints on backreaction in dust universes
• First‐Year Wilkinson Microwave Anisotropy Probe ( WMAP ) Observations: Preliminary Maps and Basic Results

Cited by

• Coupling constant constraints in a nonminimally coupled phantom cosmology