Origin of the cosmological constant
Informazioni aggiuntive
Autori
Tipo
Articolo pubblicato in rivista scientifica
Anno
2019
Lingua
Inglese
Abstract
The observed value of the cosmological constant corresponds to a time scale that is very close to the current conformal age of the universe. Here we show that this is not a coincidence but is caused by a periodic boundary condition, which only manifests itself when the metric is represented in Euclidian spacetime. The circular property of the metric in Euclidian spacetime becomes an exponential evolution (de Sitter or ensuremathŁambda term) in ordinary spacetime. The value of ensuremathŁambda then gets uniquely linked to the period in Euclidian conformal time, which corresponds to the conformal age of the universe. Without the use of any free model parameters we predict the value of the dimensionless parameter ensuremathØmega_ensuremathŁambda to be 67.2%, which is within 2ensuremathsigma of the value derived from CMB observations.
Rivista
Astrophysics and Space Science
Volume
364
Numero
9
Pagina inizio
143
Parole chiave
irsol-refereed-scientific-papers
