52 citations · 200 across the 24 of their papers we have counts for
7 papers · 1 filter
A novel model of non-singular oscillating cosmology on flat Randall-Sundrum II braneworld
Rikpratik Sengupta
We obtain a \textit{novel} model of oscillating non-singular cosmology on the spatially flat Randall-Sundrum (RS) II brane. At early times, the universe is dominated by a scalar fi…
Gravastar in the framework of Loop Quantum Cosmology
Shounak Ghosh, Rikpratik Sengupta, Mehedi Kalam
In this paper we attempt to construct a regular gravastar model using the UV corrected framework of Loop Quantum Cosmology. We find that a stable gravastar model can be constructed…
Lorentzian wormhole in the framework of loop quantum cosmology
Rikpratik Sengupta, Shounak Ghosh, Mehedi Kalam
In this paper, we construct a traversable static Lorentzian wormhole in the effective scenario of Loop Quantum Cosmology (LQC), where the field equations are modified due to the ul…
Traversable Lorentzian wormhole on the Shtanov-Sahni braneworld with matter obeying the energy conditions
Rikpratik Sengupta, Shounak Ghosh, M. Kalam
In this paper we have explored the possibility of constructing a traversable wormhole on the Shtanov-Sahni braneworld with a timelike extra dimension. We find that the Weyl curvatu…
Observationally constrained emergent universe scenario with non-conventional late-time dynamics
Rikpratik Sengupta, Anirban Chanda, B C Paul +1
In this paper, we attempt to explore the possibility of a obtaining a viable emergent universe scenario supported by a type of fluid known as the extended Chaplygin gas, which exte…
Lorentzian wormholes in an emergent universe
Rikpratik Sengupta, Shounak Ghosh, B C Paul +1
A non-singular Emergent Universe (EU) scenario within the realm of standard Relativistic physics requires a generalization of the Equation of State (EoS) connecting the pressure an…
Non-singular flat universes in braneworld and Loop Quantum Cosmology
Rikpratik Sengupta, B. C. Paul, M. Kalam +2
In this paper we take matter source with non-linear Equation of state (EoS) that has produced non-singular Emergent cosmology for spatially flat universe in General Relativity and…