Spectra of Relic Gravitons and Brans-Dicke Theory
B.K.Sahoo
TL;DR
This paper derives the spectra of relic gravitational waves within Brans-Dicke theory, linking the wave spectrum to early universe parameters and highlighting the scalar field's contribution to graviton energy density.
Contribution
It provides a novel derivation of relic graviton spectra in Brans-Dicke theory, connecting spectrum features to early universe dynamics and scalar field effects.
Findings
Relic gravitational wave spectra depend on early universe expansion parameters.
Brans-Dicke scalar field contributes significantly to graviton energy density.
Frequency-dependent spectra reveal details of inflationary models.
Abstract
The spectra of relic gravitational waves produced as a result of cosmological expansion of the inflationary models are derived in Brans-Dicke theory of gravity.The time dependence of the very early Hubble parameter and matter energy density are derived from frequency dependent spectrum of relic gravitational waves.Also it is found that Brans-Dicke scalar field contributes to the energy density of relic gravitons.
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