8 citations · 11 across the 6 of their papers we have counts for
6 papers
Post-Inflationary Constraints on Nonminimally Coupled Quintessential Inflation
Min Gi Park, Seong Chan Park, Tomo Takahashi +1
We investigate quintessential inflation in a nonminimally coupled scalar-tensor theory, parameterizing the post-inflationary radiation abundance independently of the reheating mech…
Aspects of Sommerfeld Enhancement in the light of Halo gamma-ray excess
Yongsoo Jho, Jeonghwan Park, Min Gi Park +1
We examine Sommerfeld enhancement in dark matter annihilation as a potential origin of the halo-like gamma-ray excess near GeV reported by Totani. A minimal model wi…
Beyond the Starobinsky model after ACT
Min Gi Park, Dhong Yeon Cheong, Seong Chan Park
We revisit higher order corrections to the Starobinsky inflationary model using the most recent P-ACT-LB-BK18 data, which exhibits a mild but definite tension with the predictions…
Superheavy Supersymmetric Dark Matter for the origin of KM3NeT Ultra-High Energy signal
Yongsoo Jho, Seong Chan Park, Chang Sub Shin
We propose an explanation for the recently reported ultra-high-energy neutrino signal at KM3NeT, which shows no clear association with known astrophysical sources. While decaying d…
Wormhole-Induced ALP Dark Matter
Dhong Yeon Cheong, Koichi Hamaguchi, Yoshiki Kanazawa +3
Non-perturbative gravitational effects induce explicit global symmetry breaking terms within axion models. These exponentially suppressed terms in the potential give a mass contrib…
Effective Theory Approach for Axion Wormholes
Dhong Yeon Cheong, Seong Chan Park, Chang Sub Shin
We employ the effective field theory approach to analyze the characteristics of Euclidean wormholes within axion theories. Using this approach, we obtain non-perturbative instanton…