545 citations · 5k across the 194 of their papers we have counts for
9 papers · 2 filters
Numerical calcultaion of e-fold number from hilltop with two inflatons
Jihn E. Kim, Doh Young Mo
We consider a cosmological inflation with two inflatons, and . The inflation potential is a hilltop form in the space and is a sideway down-fall field in the region…
Dark energy, QCD axion, BICEP2, and trans-Planckian decay constant
Jihn E. Kim
Discrete symmetries allowed in string compactification are the mother of all global symmetries which are broken at some level. We discuss the resulting pseudo-Goldstone bosons, in…
Bosonic Coherent Motions in the Universe
Jihn E. Kim, Yannis Semertzidis, Shinji Tsujikawa
We mini-review the role of fundamental spin-0 bosons as bosonic coherent motion (BCM) in the Universe. The fundamental spin-0 bosons have the potential to account for the baryon nu…
New confining force solution of QCD axion domain wall problem
S. M. Barr, Jihn E. Kim
The serious cosmological problems created by the axion-string/axion-domain-wall system in standard axion models are alleviated by positing the existence of a new confining force. T…
Dark matter production in the early Universe: beyond the thermal WIMP paradigm
Howard Baer, Ki-Young Choi, Jihn E. Kim +1
Increasingly stringent limits from LHC searches for new physics, coupled with lack of convincing signals of weakly interacting massive particle (WIMP) in dark matter searches, have…
Calculation of axion-photon-photon coupling in string theory
Jihn E. Kim
The axion search experiments invite a plausible estimation of the axion--photon--photon coupling constant in string models with phenomenologically acceptable v…