Emergent Universe Scenario in the Einstein-Gauss-Bonnet Gravity with Dilaton
نویسنده
چکیده
We obtain cosmological solutions which admit emergent universe (EU) scenario in four dimensions in the framework of Einstein Gauss-Bonnet gravity coupled with a dilaton field. We determine the coupling parameter of the Gauss-Bonnet terms and the dilaton to obtain EU scenario. The corresponding dilaton potential is obtained. It is found that the Gauss-Bonnet (GB) terms coupled with dilaton field plays an important role in describing the dynamics of the evolution of the early as well as the late universe. We note a new solution where GB terms dominated in the asymptotic past, subsequently its contribution ceases and dominates once again. The corresponding dilaton potential is obtained here.
منابع مشابه
Einstein-Gauss-Bonnet Gravity with Dilaton
We obtain cosmological solutions which admit emergent universe (EU) scenario in the framework of Einstein Gauss-Bonnet gravity coupled with a dilaton field in four dimensions. The coupling parameter of the Gauss-Bonnet terms and the dilaton in the theory are determined for obtaining an EU scenario. The corresponding dilaton potential which admits such scenario is determined. It is found that th...
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