113 citations · 297 across the 11 of their papers we have counts for
11 papers
Fermi-ball dark matter from a first-order phase transition
Jeong-Pyong Hong, Sunghoon Jung, Ke-Pan Xie
We propose a novel dark matter (DM) scenario based on a first-order phase transition in the early universe. If dark fermions acquire a huge mass gap between true and false vacua, t…
Spherically Symmetric Scalar Hair for Charged Black Holes
Jeong-Pyong Hong, Motoo Suzuki, Masaki Yamada
The no-hair theorem by Mayo and Bekenstein states that there exists no non-extremal static and spherical charged black hole endowed with hair in the form of a charged scalar field…
Charged black holes in non-linear Q-clouds with O(3) symmetry
Jeong-Pyong Hong, Motoo Suzuki, Masaki Yamada
We construct charged soliton solutions around spherical charged black holes with no angular momentum in asymptotically flat spacetime. These solutions are non-linear generalization…
More about Q-ball with elliptical orbit
Fuminori Hasegawa, Jeong-Pyong Hong, Motoo Suzuki
Q-balls formed from the Affleck-Dine field have rich cosmological implications and have been extensively studied from both theoretical and simulational approaches. From the theoret…
Oscillons from Pure Natural Inflation
Jeong-Pyong Hong, Masahiro Kawasaki, Masahito Yamazaki
We examine the oscillon formation in a recently proposed inflation model of the pure natural inflation, where the inflaton is an axion that couples to a strongly-coupled pure Yang-…
Inflaton fragmentation in E-models of cosmological -attractors
Fuminori Hasegawa, Jeong-Pyong Hong
Cosmological -attractors are observationally favored due to the asymptotic flatness of the potential. Since its flatness induces the negative pressure even after inflation, the…
Gauged Q-ball Decay Rates into Fermions
Jeong-Pyong Hong, Masahiro Kawasaki
We derive the decay rate of a gauged Q-ball into fermions, applying the leading semi-classical approximation. We find that more particles come out from the surface of a gauged Q-ba…
New-Type Charged Q-ball Dark Matter in Gauge Mediated SUSY Breaking Models
Jeong-Pyong Hong, Masahiro Kawasaki
We examined the viability of new-type charged Q-ball dark matter scenario. We considered the case where the relics can be treated as ordinary ions, to which we applied the observat…
A map of the non-thermal WIMP
Hyungjin Kim, Jeong-Pyong Hong, Chang Sub Shin
We study the effect of the elastic scattering on the non-thermal WIMP, which is produced by direct decay of heavy particles at the end of reheating. The non-thermal WIMP becomes im…
Charged Q-ball Dark Matter from and direction
Jeong-Pyong Hong, Masahiro Kawasaki, Masaki Yamada
We consider nearly equal number of gauge mediation type charged (anti-) Q-balls with charge of well before the BBN epoch and discussed how they evolve in time. We…
Charged Q-balls in gauge mediated SUSY breaking models
Jeong-Pyong Hong, Masahiro Kawasaki, Masaki Yamada
It is known that after Affleck-Dine baryogenesis, spatial inhomogeneities of Affleck-Dine field grow into non-topological solitons called Q-balls. In gauge mediated SUSY breaking m…