32 citations · 80 across the 4 of their papers we have counts for
6 papers · 1 filter
Sourced fluctuations in generic slow contraction
Michał Artymowski, Ido Ben-Dayan, Udaykrishna Thattarampilly
We introduce a set of generic conditions for the slow contracting Universe and for a narrowed-down category of models called fast-roll models. We present general conditions for sup…
Constant roll warm inflation in high dissipative regime
Vahid Kamali, Michał Artymowski, Mohammad Reza Setare
Constant-roll warm inflation is introduced in this work. A novel approach to finding an exact solution for Friedman equations coupled to scalar field equation of motion is presente…
f(R) and Brans-Dicke Theories and the Swampland
Michal Artymowski, Ido Ben-Dayan
We discuss the viability of and Brans-Dicke theories of gravity in light of the recent Swampland conjectures. We show that in the case of perfect fluid domination the swampl…
Quantum Hubble horizon
Michal Artymowski, Jakub Mielczarek
The article addresses a possibility of obtaining cosmologically relevant effects from the quantum nature of the Hubble horizon. Following the observation made by E.~Bianchi and C.~…
New parameterization for unified dark matter and dark energy
Zahra Davari, Mohammad Malekjani, Michal Artymowski
In this paper we investigate a new phenomenological parameterization for unified dark matter and dark energy based on the polynomial expansion of the barotropic equation of state p…
Loop quantum Brans-Dicke cosmology
Xiangdong Zhang, Michal Artymowski, Yongge Ma
The spatially flat and isotropic cosmological model of Brans-Dicke theory with coupling parameter is quantized by the approach of loop quantum cosmology. An interesting…