[en] Lake pointed out that a certain combination (which he dubbed α) of Ω and λ is a constant of motion for evolutionary trajectories in the λ–Ω plane and used mapping between α and the λ–Ω plane to demonstrate the lack of a flatness problem for cosmological models with a positive cosmological constant which will expand forever. In such models, the conserved quantity corresponds to the product of λ and the square of the mass of the universe. I investigate other quantities which correspond to α and other constants of motion in the λ–Ω plane.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Helbig, Phillip ; Université de Liège - ULiège > Université de Liège - ULiège
Language :
English
Title :
Conserved quantities in cosmology
Publication date :
2022
Event name :
56th Rencontres de Moriond, cosmology session
Event organizer :
Augé , Étienne Dumarchez, Jacques
Event place :
La Thuile, Italy
Event date :
from 23 to 30 January 2022
Audience :
International
Main work title :
2022 Cosmology: Proceedings of the 56th Rencontres de Moriond
