70 citations · 472 across the 27 of their papers we have counts for
28 papers
Global Structure, Non-Invertible PQ Symmetry, and the DFSZ Domain Wall Problem
Gongjun Choi, Sungwoo Hong, Seth Koren
In recent years it has become increasingly clear that the previously overlooked ``global structure'' of symmetry groups can encode significant theoretical structure and, more impor…
Implications of Protecting the QCD Axion in the Dual Description
Gongjun Choi, Jacob Leedom
The QCD axion can be be formulated in a dual description as a massive 2-form field. In this picture, the QCD axion quality problem translates into the question if there are additio…
-Odd Polonyi Field in Twin Higgs Model
Gongjun Choi, Keisuke Harigaya
We consider a supersymmetric mirror Twin Higgs model in a gravity-mediated supersymmetry-breaking scenario. We point out that the Polonyi field can be odd under the symmetr…
UV and IR Effects in Axion Quality Control
C. P. Burgess, Gongjun Choi, F. Quevedo
Motivated by recent discussions and the absence of exact global symmetries in UV completions of gravity we re-examine the axion quality problem (and naturalness issues more general…
High Quality Axion in Supersymmetric Models
Gongjun Choi, Tsutomu T. Yanagida
In this work, we discuss how the use of the symmetries well motivated in physics beyond the Standard model (BSM) can guarantee the high quality axions. We avoid to introduce symmet…
PBH assisted search for QCD axion dark matter
Gongjun Choi, Enrico D. Schiappacasse
The entropy production prior to BBN era is one of ways to prevent QCD axion with the decay constant from overclosing the universe when…
Dynamically Induced Topological Inflation
Gongjun Choi, Weikang Lin, Tsutomu T. Yanagida
We propose an inflation model in which the inflationary era is driven by the strong dynamics of gauge theory. The quark condensation in the confined phase of gauge…
Discrete -symmetry, Various Energy Scales and Gravitational Waves
Gongjun Choi, Weikang Lin, Tsutomu T. Yanagida
We present a supersymmetric model where energy scales of a discrete -symmetry breaking () and cosmic inflation are commonly attributed to the confinement scale of a hidd…
Probing PeV scale SUSY-breaking with Satellite Galaxies and Primordial Gravitational Waves
Gongjun Choi, Ryusuke Jinno, Tsutomu T. Yanagida
We study an inevitable cosmological consequence in PeV scale SUSY-breaking scenarios. We focus on the SUSY-breaking scale corresponding to the gravitino mass $m_{3/2}=100{\rm eV}-1…
Cosmic Birefringence and Electroweak Axion Dark Energy
Gongjun Choi, Weikang Lin, Luca Visinelli +1
Taking the recently reported non-zero rotation angle of the cosmic microwave background (CMB) linear polarization as the hint for a pseudo Nambu-Goldston…
Gravitino Cosmology Helped by a Right Handed (S)Neutrino
Gongjun Choi, Tsutomu T. Yanagida
In this paper, we discuss interesting scenarios resulting from the interplay between the gravitino and the lightest right-handed (s)neutrino. We consider two gravitino mass regimes…
Charms of Strongly Interacting Conformal Gauge Mediation
Gongjun Choi, Tsutomu T. Yanagida, Norimi Yokozaki
By extending a previously proposed conformal gauge mediation model, we construct a gauge-mediated SUSY breaking (GMSB) model where a SUSY-breaking scale, a messenger mass, the -…
The Upper Bound of the Second Higgs Boson Mass in Minimal Gauge Mediation with the Gravitino Warm Dark Matter
Gongjun Choi, Tsutomu T. Yanagida, Norimi Yokozaki
A keV-scale gravitino arsing from a minimal supersymmetric (SUSY) Standard Model (MSSM) is an interesting possibility since the small scale problems that CDM model encounters in…
A Model of Interacting Dark Matter and Dark Radiation for and Tensions
Gongjun Choi, Tsutomu T. Yanagida, Norimi Yokozaki
We present a model describing the dark sector (DS) featured by two interactions remaining efficient until late times in the matter-dominated era after recombination: the interactio…
Dark Photon Dark Matter in the minimal Model
Gongjun Choi, Tsutomu T. Yanagida, Norimi Yokozaki
The extension of the Standard model (SM) with three heavy right handed neutrinos, a complex scalar and the gauged symmetry (the minimal model) is considered…
Feebly Interacting Gauge Boson Warm Dark Matter and XENON1T Anomaly
Gongjun Choi, Tsutomu T. Yanagida, Norimi Yokozaki
The recent observation of an excess in the electronic recoil data by the XENON1T detector has drawn many attentions as a potential hint for an extension of the Standard Model (SM).…
XENON1T Anomaly and its Implication for Decaying Warm Dark Matter
Gongjun Choi, Motoo Suzuki, Tsutomu T. Yanagida
An excess in the electronic recoil data was observed in the XENON1T detector. One of plausible explanations for the excess is absorption of a vector bosonic particle with the mass…
QCD Axion From a Spontaneously Broken B-L Gauge Symmetry
Gongjun Choi, Motoo Suzuki, Tsutomu T. Yanagida
In this paper, we show that the Peccei-Quinn (PQ) symmetry with a good quality can be realized in a simple extension of the minimal supersymmetric standard model. The PQ symm…
Degenerate Fermion Dark Matter from a Broken Gauge Symmetry
Gongjun Choi, Motoo Suzuki, Tsutomu. T. Yanagida
The extension of the Standard model by assuming gauge symmetry is very well-motivated since it naturally explains the presence of heavy right-handed neutrinos requ…
Degenerate Sub-keV Fermion Dark Matter from a Solution to the Hubble Tension
Gongjun Choi, Motoo Suzuki, Tsutomu T. Yanagida
We present a dark sector model addressing both the Hubble tension and the core-cusp problem. The model is based on a hidden Abelian gauge symmetry group with some chiral fermions r…
Quintessence Axion Dark Energy and a Solution to the Hubble Tension
Gongjun Choi, Motoo Suzuki, Tsutomu T. Yanagida
We present a model in which the question about a nature of the dark energy and the recently raised Hubble tension can be addressed at once. We consider the electroweak axion in the…
Solving the strong CP problem with horizontal gauge symmetry
Gongjun Choi, Tsutomu T. Yanagida
We present a solution to the strong CP problem, which relies on the horizontal gauge symmetry and CP invariance in a full theory. Similar to other Nelson-Barr type solutions, CP vi…
Probing Dynamics of Boson Stars by Fast Radio Bursts and Gravitational Wave Detection
Gongjun Choi, Hong-Jian He, Enrico D. Schiappacasse
Boson stars may consist of a new type of light singlet scalar particles with nontrivial self-interactions, and may compose a fraction of the dark matter in the Universe. In this wo…
Probing Decoupling in Dark Sectors with the Cosmic Microwave Background
Gongjun Choi, Chi-Ting Chiang, Marilena LoVerde
The acoustic peaks in the angular power spectrum of cosmic microwave background (CMB) temperature and polarization anisotropies play an important role as a probe of the nature of n…