99 citations · 316 across the 14 of their papers we have counts for
15 papers
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…
Pseudo-Nambu-Goldstone Boson Production from Inflaton Coupling during Reheating
Kunio Kaneta, Sung Mook Lee, Kin-ya Oda +1
The existence of pseudo-Nambu-Goldstone boson (pNGB) fields is a common feature in many models beyond the Standard Model, characterized by their exclusive derivative couplings. Thi…
Cosmic Birefringence by Dark Photon
Sung Mook Lee, Dong Woo Kang, Jinn-Ouk Gong +3
We study the kinetic mixing between the cosmic microwave background (CMB) photon and the birefringent dark photon. These birefringent dark photon may exist in parity-violating dark…
Symmetries and Selection Rules: Optimising Axion Haloscopes for Gravitational Wave Searches
Valerie Domcke, Camilo Garcia-Cely, Sung Mook Lee +1
In the presence of electromagnetic fields, both axions and gravitational waves (GWs) induce oscillating magnetic fields: a potentially detectable fingerprint of their presence. We…
Ultraviolet Sensitivity in Higgs-Starobinsky Inflation
Sung Mook Lee, Tanmoy Modak, Kin-ya Oda +1
The general scalar-tensor theory that includes all the dimension-four terms has parameter regions that can produce successful inflation consistent with cosmological observations. T…
Axion Quality Problem and Non-Minimal Gravitational Coupling in the Palatini Formulation
Dhong Yeon Cheong, Koichi Hamaguchi, Yoshiki Kanazawa +3
In axion models, the global U(1) Peccei-Quinn (PQ) symmetry is explicitly broken by non-perturbative effects of gravity, such as axionic wormholes. The gravitational violation of t…
Boltzmann or Bogoliubov? Approaches Compared in Gravitational Particle Production
Kunio Kaneta, Sung Mook Lee, Kin-ya Oda
Gravitational particle production is a minimal contribution to reheating the Universe after the end of inflation. To study this production channel, two different approaches have co…
Reheating in Models with Non-minimal Coupling in metric and Palatini formalisms
Dhong Yeon Cheong, Sung Mook Lee, Seong Chan Park
We study reheating of inflationary models with general non-minimal coupling with where is the Ricci scalar and is the inflaton potential. In…
Festina-Lente Bound on Higgs Vacuum Structure and Inflation
Sung Mook Lee, Dhong Yeon Cheong, Sang Chul Hyun +2
The recently suggested Festina-Lente (FL) bound provides a lower bound on the masses of charged particles in terms of the positive vacuum energy. Since the charged par…
The -Higgs inflation with two Higgs doublets
Sung Mook Lee, Tanmoy Modak, Kin-ya Oda +1
We study -Higgs inflation in a model with two Higgs doublets in which the Higgs sector of the Standard Model is extended by an additional Higgs doublet, thereby four scalar fi…
Progress in Higgs inflation
Dhong Yeon Cheong, Sung Mook Lee, Seong Chan Park
We review the recent progress in Higgs inflation focusing on Higgs- inflation, primordial black hole production and the term.
Spontaneous Leptogenesis in Higgs Inflation
Sung Mook Lee, Kin-ya Oda, Seong Chan Park
We propose a scenario of spontaneous leptogenesis in Higgs inflation with help from two additional operators: the Weinberg operator (Dim 5) and the derivative coupling of the Higgs…
Light gauge boson interpretation for and the anomaly at the J-PARC KOTO experiment
Yongsoo Jho, Sung Mook Lee, Seong Chan Park +2
We discuss a list of possible light gauge boson interpretations for the long-standing experimental anomaly in and also recent anomalous excess in $K_L \rightarrow π^0 + \…
Primordial Black Holes in Higgs- Inflation as a Whole Dark Matter
Dhong Yeon Cheong, Sung Mook Lee, Seong Chan Park
Primordial black holes are produced in a minimal UV extension to the Higgs inflation with an included term. We show that for parameters consistent with Standard Model measure…
Higgs Inflation and the Refined dS Conjecture
Dhong Yeon Cheong, Sung Mook Lee, Seong Chan Park
The refined de Sitter derivative conjecture provides constraints to potentials that are low energy effective theories of quantum gravity. It can give direct bounds on inflationary…