61 citations · 411 across the 25 of their papers we have counts for
7 papers · 1 filter
More on Emergent Dark Energy from Unparticles
Michał Artymowski, Ido Ben-Dayan, Utkarsh Kumar
In a recent paper \cite{Artymowski:2020zwy} we suggested the possibility that the present acceleration of the Universe is due to thermodynamical behavior of unparticles. The model…
Hill-climbing dark inflation
Michal Artymowski, Zygmunt Lalak, Kin-Ya Oda
Within the framework of the scalar-tensor theory we consider a hill-climbing inflation, in which the effective Planck mass increases in time. We obtain the Einstein frame potential…
Gravitational wave signals and cosmological consequences of gravitational reheating
Michał Artymowski, Olga Czerwińska, Zygmunt Lalak +1
Reheating after inflation can proceed even if the inflaton couples to Standard Model (SM) particles only gravitationally. However, particle production during the transition between…
Scalar-tensor linear inflation
Michal Artymowski, Antonio Racioppi
We investigate two approaches to non minimally coupled gravity theories which present linear inflation as attractor solution: a) the scalar-tensor theory approach, where we look fo…
Initial conditions for inflation
Konstantinos Dimopoulos, Michal Artymowski
Within the -attractors framework we investigate scalar potentials with the same pole as the one featured in the kinetic term. We show that, in field space, this leads to directi…
Multi-phase induced inflation in theories with non-minimal coupling to gravity
Michal Artymowski, Zygmunt Lalak, Marek Lewicki
In this paper we investigate the induced inflation with two flat regions: one Starobinsky-like plateau in big field regime and one shorter plateau around the saddle point of the Ei…
Endlessly flat scalar potentials and -attractors
Michal Artymowski, Javier Rubio
We consider a minimally-coupled inflationary theory with a general scalar potential containing a stationary point of maximal order . We show…