General properties of vacuum solutions of () gravity are obtained by the condition that the divergence of the Weyl tensor is zero and ′′≠0. Specifically, a theorem states that the gradient of the curvature scalar, ∇, is an eigenvector of the Ricci tensor and, if it is timelike, the spacetime is a Generalized Friedman–Robertson–Walker metric; in dimension four, it is Friedman–Robertson–Walker.
General properties of f(R) gravity vacuum solutions / S. Capozziello, C.A. Mantica, L.G. Molinari. - In: INTERNATIONAL JOURNAL OF MODERN PHYSICS D. - ISSN 0218-2718. - 29:13(2020 Oct). [10.1142/S0218271820500893]
General properties of f(R) gravity vacuum solutions
C.A. Mantica;L.G. MolinariUltimo
2020
Abstract
General properties of vacuum solutions of () gravity are obtained by the condition that the divergence of the Weyl tensor is zero and ′′≠0. Specifically, a theorem states that the gradient of the curvature scalar, ∇, is an eigenvector of the Ricci tensor and, if it is timelike, the spacetime is a Generalized Friedman–Robertson–Walker metric; in dimension four, it is Friedman–Robertson–Walker.File in questo prodotto:
File | Dimensione | Formato | |
---|---|---|---|
22) f(R)vacuum.pdf
accesso aperto
Descrizione: in arXiv
Tipologia:
Pre-print (manoscritto inviato all'editore)
Dimensione
169.18 kB
Formato
Adobe PDF
|
169.18 kB | Adobe PDF | Visualizza/Apri |
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.