Bouncing theory in the modified Weyl gravity and its stability conditions

Journal Article · Mon Oct 15 04:00:00 EDT 2018 · Annals of Physics

DOI:https://doi.org/10.1016/J.AOP.2018.04.005· OSTI ID:22848364

Ghanaatian, Mohammad; Milani, Farzad ^[1]

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1. Department of Physics, Payame Noor University (Iran, Islamic Republic of)

Highlights: •The standard Weyl gravity model is investigated. •The stability conditions of the standard Weyl gravity model are considered. •In the spatially flat Friedmann–Robertson–Walker (FRW) universe, according to the Holographic Dark Energy (HDE) model, the accelerated expansion of the universe is considered. •The suitable conditions of a successful bounce are obtained. -- Abstract: In this paper, we demonstrate the analytical functions of a chameleon scalar field adjust the stability conditions of the standard Weyl gravity model. The suitable conditions of a successful bounce are obtained when the equation of state (EoS) parameter, crosses over the phantom divider. The accelerated expansion of the universe is considered by using the conditions and coordinates of a Friedmann–Robertson–Walker (FRW) universe and the Holographic Dark Energy (HDE) model. The stability conditions of the resulting model are then considered.

• OSTI ID: 22848364
• Journal Information: Annals of Physics, Journal Name: Annals of Physics Vol. 397; ISSN 0003-4916; ISSN APNYA6
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
EQUATIONS OF STATE
GRAVITATION
HOLOGRAPHY
NONLUMINOUS MATTER
SCALAR FIELDS
WEYL UNIFIED THEORY