https://doi.org/10.1140/epjc/s10052-022-10978-7
Regular Article - Theoretical Physics
annihilation on the stochastic background of primordial gravitational waves with BKP18
Department of Physics, Government Kolasib College, 796081, Kolasib, Mizoram, India
Received:
10
August
2022
Accepted:
29
October
2022
Published online:
7
November
2022
The evolution of inflationary primordial gravitational waves with the expansion of the universe is studied while taking into account the annihilation which leads to step correction in the spectrum of primordial gravitational waves which is
in the amplitude and
in the energy density. The amplitudes and energy densities are studied for the
-attractor inflation models which are in agreement with the recent BICEP/Keck and Planck 2018 joint result. The energy densities are well within the big bang nucleosynthesis bound, but the spectra for these models are very much below the detection range of the currently operating and upcoming detectors.
© The Author(s) 2022
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