31 citations · 156 across the 28 of their papers we have counts for
13 papers · 1 filter
Primordial Black Hole Abundances and Scalar Induced Gravitational Waves from Finite-Width Power Spectra in a Stiff Thermal History
Abolhassan Mohammadi, Yogesh, Cristian Joana +2
We study the formation of primordial black holes (PBHs) from large primordial perturbations that re-enter the horizon during an epoch with equation of state . We co…
Constraining Quintessential Inflation with ACT: A Gauss-Bonnet Gateway
Yogesh, Imtiyaz Ahmad Bhat, Mayukh R. Gangopadhyay +1
Recent results from the Atacama Cosmology Telescope (ACT), indicating a higher and more tightly constrained scalar spectral index, , place several inflatio…
Spinning Primordial Black Holes and Scalar Induced Gravitational Waves from Single Field Inflation
Abolhassan Mohammadi, Yogesh, Qiang Wu +1
We investigate the formation of primordial black holes (PBHs), their spin and abundance, in a single-field inflationary model based on a mutated hilltop potential inserted with a s…
Power Law Plateau Inflation and Primary Gravitational Waves in the light of ACT
Abolhassan Mohammadi, Yogesh, Anzhong Wang
We investigate Power-Law Plateau (PLP) inflation in standard gravity and its consistency with ACT DR6 data. While many inflationary models, including the Starobinsky inflation, are…
Inflationary Dynamics of Mutated Hilltop Inflation in Einstein-Gauss-Bonnet Gravity Under New Slow-Roll Approximations with Generalised Reheating
Yogesh, Mehnaz Zahoor, Kashif Ali Wani +1
The advancement in the observational cosmology of the early universe such as Cosmic Microwave Background (CMB) observations, puts severe constraints on the inflationary models. Man…
Starobinsky like inflation and EGB Gravity in the light of ACT
Yogesh, Abolhassan Mohammadi, Qiang Wu +1
The ACT data shows an enhancement in the value of the scalar spectral index, as , leading to disfavoring many inflationary models, including the Starobinsk…
Inflationary Dynamics in Einstein-Gauss-Bonnet Gravity Using New Slow-Roll Approximations considering Generalised Reheating
Yogesh, Imtiyaz Ahmad Bhat, Mayukh R. Gangopadhyay
The Cosmic Microwave Background (CMB) observations results reported by {\it Planck} satellite suggest a plateau characteristic in the flat potential of the inflaton field is favore…
Is the NANOGrav detection evidence of resonant particle creation during inflation?
M. R. Gangopadhyay, V. V. Godithi, K. Ichiki +5
We show that the recently reported cosmic gravitational wave background by the NANOGrav 15-year collaboration may be the result of resonant particle creation during inflation. For…
A Case Study of Small Field Inflationary Dynamics in the Einstein-Gauss Bonnet Framework in the Light of
Mayukh R. Gangopadhyay, Hussain Ahmed Khan, Yogesh
We study two of the most theoretically promising models of inflation, namely the Natural inflation and the Mutated Hilltop inflation, in the Einstein-Gauss Bonnet(EGB) gravity fram…
Study of Goldstone Inflation in the domain of Einstein-Gauss-Bonnet gravity
Hussain Ahmed Khan, Yogesh
Realizing the inflationary epoch driven by a pseudo-Nambu Goldstone boson (pNGB) could ensure the coveted flatness, and the sub-Planckian scales related to the dynamics of the para…
Production of Primordial Black Holes via Single Field Inflation and Observational Constraints
Mayukh R. Gangopadhyay, Jayesh C. Jain, Devanshu Sharma +1
In a class of single field models of inflation, the idea of Primordial Black holes(PBHs) production is studied. In this case, the dynamics on small cosmological scales differs sign…
Power Law Plateau Inflation Potential In The RS Braneworld Evading Swampland Conjecture
Rathin Adhikari, Mayukh Raj Gangopadhyay, Yogesh
In the recent time, inflationary cosmology is facing an existential crisis due to the proposed Swampland criterion which aims to evade any (meta-)stable de Sitter construction with…
Lower tensor to scalar ratio in a SUGRA motivated inflationary potential
Rathin Adhikari, Mayukh R. Gangopadhyay, Yogesh
A scalar potential obtained from the -term in the Supergravity models, which dominates over term and is mainly responsible for the inflationary phase in the early universe,…