Horndeski Genesis: strong coupling and absence thereof
| Autor: | Oleg Evseev, Valery Rubakov, Y. Ageeva, Oleg Melichev |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Physics
Inflation (cosmology) 010308 nuclear & particles physics QC1-999 Stability (learning theory) Classical field theory 01 natural sciences Zero (linguistics) symbols.namesake Range (mathematics) Theoretical physics 0103 physical sciences Strong coupling symbols 010306 general physics Lagrangian |
| Zdroj: | EPJ Web of Conferences, Vol 191, p 07010 (2018) |
| Popis: | We consider Genesis in Horndeski theory as alternative to or completion of inflationary scenario. One of the options free of instabilities at all comological epochs is putative strong coupling regime at the early Genesis stage. We address this issue to see whether classical field theory description of the background evolution at this early stage is consistent, nevertheless. We argue that, indeed, despite naive strong coupling, classical analysis is legitimate in a certain range of parameters. This opens up a posibility of a novel scenario for the beginning of the cosmological expansion. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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