This research paper examines a cosmological model in flat space-time via f(R,G)gravity,where R and G are the Ricci scalar and Gauss-Bonnet invariant,respectively.Our model assumes that f(R,G)is an exponential function...This research paper examines a cosmological model in flat space-time via f(R,G)gravity,where R and G are the Ricci scalar and Gauss-Bonnet invariant,respectively.Our model assumes that f(R,G)is an exponential function of G combined with a linear combination of R.We scrutinize the observational limitations under a power law cosmology that relies on two parameters,the Hubble constant(Ho)and the deceleration parameter(q)utilizing the 57-point H(z)data,8-point BAO data,1701-point Pantheon+data,joint data of H(z)+Pantheon,and joint data of H(z)+BAO+Pantheon+.The outcomes for H_(0)and q are realistic within observational ranges.We also address energy conditions,Om(z)analysis,and cosmographical parameters such as jerk,lerk,and snap.Our estimate of Ho is remarkably consistent with various recent Planck Collaboration studies that utilize the ACDM model.According to our study,power law cosmology within the context of f(R,G)gravity provides the most comprehensive explanation of the important aspects of cosmic evolution.展开更多
基金support of the Ministry of Science and Higher Education of the Russian Federation(State contract GZ0110/23-10-IF)。
文摘This research paper examines a cosmological model in flat space-time via f(R,G)gravity,where R and G are the Ricci scalar and Gauss-Bonnet invariant,respectively.Our model assumes that f(R,G)is an exponential function of G combined with a linear combination of R.We scrutinize the observational limitations under a power law cosmology that relies on two parameters,the Hubble constant(Ho)and the deceleration parameter(q)utilizing the 57-point H(z)data,8-point BAO data,1701-point Pantheon+data,joint data of H(z)+Pantheon,and joint data of H(z)+BAO+Pantheon+.The outcomes for H_(0)and q are realistic within observational ranges.We also address energy conditions,Om(z)analysis,and cosmographical parameters such as jerk,lerk,and snap.Our estimate of Ho is remarkably consistent with various recent Planck Collaboration studies that utilize the ACDM model.According to our study,power law cosmology within the context of f(R,G)gravity provides the most comprehensive explanation of the important aspects of cosmic evolution.
