11 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
3 papers · 1 filter
Preventing Curvature Singularities in Dark Energy Models
Romy Hanang Setya Budhi, Nehla Shobcha, Norma Sidik Risdianto
The curvature singularity problem in dark energy models poses a significant challenge to their viability as alternatives to the CDM paradigm. In this work, we investigate…
The Preheating Stage on The Starobinsky Inflation after ACT
Norma Sidik Risdianto, Romy Hanang Setya Budhi, Nehla Shobcha +2
Recent ACT results favor larger e-fold numbers, which tighten the reheating requirements in Starobinsky inflation. We show that efficient reheating generically requires an addition…
The Second-Level Preheating
Norma Sidik Risdianto, Apriadi Salim Adam, Lalu Zamakhsyari
This paper proposes two levels of preheating for the inflaton that is non-minimally coupled with gravity. The first level, later named by the quadratic regime, corresponds to the m…