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arxiv: gr-qc/9612053 · v1 · submitted 1996-12-18 · 🌀 gr-qc

Some aspects of the cosmological conformal equivalence between ``Jordan Frame'' and ``Einstein Frame''

Salvatore Capozziello , Ruggiero de Ritis , Alma Angela Marino This is my paper
classification 🌀 gr-qc
keywords cosmologicalframeanalysisconformaleinsteinequivalencejordanarena
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The conformal equivalence between Jordan frame and Einstein frame can be used in order to search for exact solutions in general theories of gravity in which scalar fields are minimally or nonminimally coupled with geometry. In the cosmological arena a relevant role is played by the time parameter in which dynamics is described. In this paper we discuss such issues considering also if cosmological Noether symmetries in the ``point--like'' Lagrangian are conformally preserved. Through this analysis and through also a careful analysis of the cosmological parameters \Omega and \Lambda, it is possible to contribute to the discussion on which is the physical system.

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  1. Could a so far ignored symmetry of the classical laws of gravity explain the cosmological puzzles?

    gr-qc 2025-10 unverdicted novelty 5.0

    Weyl symmetry of gravity is restored if masses transform as m → Ω^{-1}m under conformal changes, allowing any matter to couple invariantly and potentially accounting for dark energy and dark matter.