Journal
PHYSICS LETTERS B
Volume 766, Issue -, Pages 225-230Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physletb.2017.01.012
Keywords
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Funding
- Comision Nacional de Investigacion Cientifica y Tecnologica(Becas Chile) [72150066]
- Russian Science Foundation (RSF) [16-12-10401]
- Min. of Education and Science of Russia [TSPU-139]
- MINECO (Spain) [FIS2013-44881]
- Russian Science Foundation [16-12-10401] Funding Source: Russian Science Foundation
- ICREA Funding Source: Custom
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In this paper we study the occurrence of accelerating universe versus decelerating universe between the F(R) gravity frame (Jordan frame) and non-minimally coupled scalar field theory frame, and the minimally coupled scalar field theory frame (Einstein frame) for various models. As we show, if acceleration is imposed in one frame, it will not necessarily correspond to an accelerating metric when transformed in another frame. As we will demonstrate, this issue is model and frame-dependent but it seems there is no general scheme which permits to classify such cases. (C) 2017 The Authors. Published by Elsevier B.V.
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