Электронный каталог

Статья

Kazakov, D.I.
Leading All-Loop Quantum Contribution to the Effective Potential in the Inflationary Cosmology / D.I.Kazakov, R.M.Iakhibbaev, D.M.Tolkachev // Journal of Cosmology and Astroparticle Physics [Electronic resource]. – 2023. – Vol. 2023, No. 9. – P. 049. – URL: https://doi.org/10.1088/1475-7516/2023/09/049.

In this paper, we have constructed quantum effective potentials and used them to study slow-roll inflationary cosmology. We derived the generalised RG equation for the effective potential in the leading logarithmic approximation and applied it to evaluate the potentials of the T*2 and T*4-models, which are often used in modern models of slow-roll inflation. We found that while the one-loop correction strongly affects the potential, breaking its original symmetry, the contribution of higher loops smoothes the behaviour of the potential. However, unlike the ϕ*4-case, we found that the effective potentials preserve spontaneous symmetry breaking when summing all the leading corrections. We calculated the spectral indices n&sub(s) and r for the effective potentials of both models and found that they are consistent with the observational data for a wide range of parameters of the models.



ОИЯИ = ОИЯИ (JINR)2023
Спец.(статьи,препринты) = С 322.2 - Космология. Гравитационные волны
Бюллетени = 15/024