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001-es BibID:	BIBFORM088496
Első szerző:	Márián István Gábor (fizikus)
Cím:	Renormalization-group running induced cosmic inflation / I. G. Márián, N. Defenu, U. D. Jentschura, A. Trombettoni, I. Nándori
Dátum:	2020
ISSN:	1475-7516
Megjegyzések:	As a contribution to a viable candidate for a standard model of cosmology, we here show that pre-inflationary quantum fluctuations can provide a scenario for the long- sought initial conditions for the inflaton field. Our proposal is based on the assumption that at very high energies (higher than the energy scale of inflation) the vacuum-expectation value (VeV) of the field is trapped in a false vacuum and then, due to renormalization-group (RG) running, the potential starts to flatten out toward low energy, eventually tending to a convex one which allows the field to roll down to the true vacuum. We argue that the proposed mechanism should apply to large classes of inflationary potentials with multiple concave regions. Our findings favor a particle physics origin of chaotic, large-field inflationary models as we eliminate the need for large field fluctuations at the GUT scale. In our analysis, we provide a specific example of such an inflationary potential, whose parameters can be tuned to reproduce the existing cosmological data with good accuracy.
Tárgyszavak:	Természettudományok Fizikai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk
Megjelenés:	Journal of Cosmology and Astroparticle Physics. - 2020 : 06 (2020), p. 028-028. -
További szerzők:	Defenu, N. Jentschura, Ulrich David (fizikus) Trombettoni, Andrea Nándori István (1973-) (fizikus)
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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