TY - JOUR

T1 - Bouncing cosmology in modified Gauss-Bonnet gravity

AU - Bamba, Kazuharu

AU - Makarenko, Andrey N.

AU - Myagky, Alexandr N.

AU - Odintsov, Sergei D.

PY - 2014/5/1

Y1 - 2014/5/1

N2 - We explore bounce cosmology in F(G) gravity with the Gauss-Bonnet invariant G. We reconstruct F(G) gravity theory to realize the bouncing behavior in the early universe and examine the stability conditions for its cosmological solutions. It is demonstrated that the bouncing behavior with an exponential as well as a power-law scale factor naturally occurs in modified Gauss-Bonnet gravity. We also derive the F(G) gravity model to produce the ekpyrotic scenario. Furthermore, we construct the bounce with the scale factor composed of a sum of two exponential functions and show that not only the early-time bounce but also the late-time cosmic acceleration can occur in the corresponding modified Gauss-Bonnet gravity. Also, the bounce and late-time solutions in this unified model are explicitly analyzed.

AB - We explore bounce cosmology in F(G) gravity with the Gauss-Bonnet invariant G. We reconstruct F(G) gravity theory to realize the bouncing behavior in the early universe and examine the stability conditions for its cosmological solutions. It is demonstrated that the bouncing behavior with an exponential as well as a power-law scale factor naturally occurs in modified Gauss-Bonnet gravity. We also derive the F(G) gravity model to produce the ekpyrotic scenario. Furthermore, we construct the bounce with the scale factor composed of a sum of two exponential functions and show that not only the early-time bounce but also the late-time cosmic acceleration can occur in the corresponding modified Gauss-Bonnet gravity. Also, the bounce and late-time solutions in this unified model are explicitly analyzed.

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U2 - 10.1016/j.physletb.2014.04.004

DO - 10.1016/j.physletb.2014.04.004

M3 - Article

AN - SCOPUS:84898620291

VL - 732

SP - 349

EP - 355

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

SN - 0370-2693

ER -