Reconstruction of cosmic history from a simple parametrization of H
Shibesh Kumar Jas PacifCentre for Theoretical Physics, Jamia Millia Islamia, New Delhi 110025, IndiaRatbay MyrzakulovEurasian International Center for Theoretical Physics, Eurasian National University, Astana 010008, KazakhstanShynaray MyrzakulDepartment of Theoretical and Nuclear Physics, Al-Farabi Kazakh National University, Al-Farabi av. 71, 050040, Almaty, Kazakhstan
2017en
ABI
Annotatsiya
In this paper, we propose a simple parametrization of the Hubble parameter (HP) [Formula: see text] in order to explain the late-time cosmic acceleration. We show that our proposal covers many models obtained in different schemes of parametrization under one umbrella. We demonstrate that a simple modification in the functional form of HP can give rise to interesting cosmological phenomena such as big rip singularity, bounce and others. We have also constrained the model parameters using the latest 28 points of [Formula: see text] data for three cases which admit transition from deceleration to acceleration.
Hali tarjima qilinmagan
Identifikatorlar
Iqtiboslar va manbalar
9 ta iqtibos0 ta foydalanilgan manba