Some interesting aspects of modified Gauss-Bonnet gravity

被引：0
作者：
Shamir, M. Farasat [1 ]
Saeed, Atrooba [1 ]
机构：
[1] Natl Univ Comp & Emerging Sci, Lahore Campus, Lahore, Pakistan
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS A | 2022年 / 37卷 / 31-32期
关键词：
Scalar-tensor theory; f(G; f); energy conditions; linear trace term; bouncing solutions; DARK ENERGY; F G; ANISOTROPIC UNIVERSE; COSMOLOGICAL MODELS; INFLATION; CONSTANT; DYNAMICS; BRANE;
D O I：
10.1142/S0217751X22501883
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
The main idea behind this paper is to study f(G, phi) theory of gravity, where G is Gauss-Bonnet (GB) term and phi is the scalar field. Scalar field has been introduced to explore gravitational interaction between geometry and scalar field. Field equations in Friedmann-Robertson Walker (FRW) cosmology are constructed and found to be coherent with the existing literature. Exponential solutions are reconstructed. The coupling of the scalar field to the GB term leads to viable results. Further, we probe the oscillating universe in the said gravity model using linear trace term. Energy conditions are explored and graphically analyzed in detail to substantiate our work. Behavior of the Hubble and deceleration parameter is also examined. It is evident from the results that our model provides us with acceptable bouncing solutions for chosen parameters.
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页数：14
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