Energy conditions allow eternal inflation
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2021/03/097
Abstract: Eternal inflation requires upward fluctuations of the energy in a Hubble volume, which appear to violate the energy conditions. In particular, a scalar field in an inflating spacetime should obey the averaged null energy condition,… read more here.
Keywords: energy; conditions allow; energy conditions; allow eternal ... See more keywords
Quantum cosmology, eternal inflation, and swampland conjectures
Sign Up to like & getrecommendations! Published in 2023 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2023/04/034
Abstract: In light of the recent swampland conjectures, we explore quantum cosmology and eternal inflation beyond the slow roll regime. We consider a model of a closed universe with a scalar field ϕ in the framework… read more here.
Keywords: quantum cosmology; swampland conjectures; cosmology; eternal inflation ... See more keywords
Lyth Bound, eternal inflation and future cosmological missions
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DOI: 10.1103/physrevd.96.023511
Abstract: In this paper we provide a new expression for the variation of the inflaton field $\Delta\phi$ during the horizon crossing epoch in the context of single field slow roll inflationary models. Such an expression represents… read more here.
Keywords: future cosmological; inflation future; lyth bound; eternal inflation ... See more keywords