545 citations · 5k across the 194 of their papers we have counts for
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Flavor mixing inspired by flipped SU(5) GUT
Junu Jeong, Jihn E. Kim, Se-Jin Kim
We obtain a phenomenologically acceptable Cabibbo-Kobayashi-Maskawa matrix in a flipped SU(5) model inspired by the compactification of heterotic string .
R-parity from string compactification
Jihn E. Kim
In this paper, we embed the parity as a discrete subgroup of a global symmetry \UoR\,obtained from compactification of heterotic string $\EE8$. A part of \UoR…
Theory of flavors: String compactification
Jihn E. Kim
We present a calculating method for the quark and lepton mixing angles. After a general discussion in field theoretic models, we present a working model from a string compactificat…
Axion energy density, bottle neck period, and ratios between early and late times
Jihn E. Kim, Se-Jin Kim, Soonkeon Nam
The possibility of the "invisible" axion being cold dark matter relies on the acceptable estimates of the current axion energy density. The estimate depends on the nature of QCD ph…
"Invisible" QCD axion rolling through the QCD phase transition
Jihn E. Kim, Se-Jin Kim
Visible matter in the current Universe is a consequence of the phase transition of the strong force, quantum chromodynamics (QCD). This phase transition has occurred at the Univers…
Fate of global symmetries in the Universe: QCD axion, quintessential axion and trans-Planckian inflaton decay-constant
Jihn E. Kim, Soonkeon Nam, Yannis K. Semertzidis
Pseudoscalars appearing in particle physics are reviewd systematically. From the fundamental point of view at an ultra-violat completed theory, they can be light if they are realiz…