1996/12/18 by Salvatore Capozziello, Salvatore Capozzıello, R. de Ritis +3 · 4 citations
Physics and Astronomy · #Advanced Differential Geometry Research #Black Holes and Theoretical Physics #Classical mechanics #Conformal gravity #Conformal map #Conformal symmetry #Cosmological constant #Cosmology #Cosmology and Gravitation Theories #Dark energy #Einstein #Equivalence (formal languages) #Geometry #Gravitation #Lambda-CDM model #Mathematical physics #Physics #Pure mathematics #Quantum mechanics #Scalar (mathematics) #Theoretical physics #gr-qc
paper · pdf · doi:10.1088/0264-9381/14/12/010
published as Class.Quant.Grav.14:3243-3258,1997 · 25 pages, latex, submitted to Class. Quantum Grav
arxiv created 1996/12/18 · openalex publication_date 1997/12/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
The conformal equivalence between the Jordan and the Einstein frames can be used in order to search for exact solutions in general theories of gravity in which scalar fields are coupled with geometry in a standard or in a nonstandard way. In the cosmological arena a relevant role is played by the time parameter in which dynamics is described. In this paper we discuss the problem of conformal equivalence between a given nonstandard coupled model and the corresponding standard one. We analyse in detail the cosmological case and we see that, together with this, and through a careful analysis of the cosmological parameters and , it is possible to contribute to the discussion on which is the physical system.