99 citations · 368 across the 18 of their papers we have counts for
19 papers
Continuous Measurement of Quantum Axion Dark Matter
Yunjia Bao, Dhong Yeon Cheong, Nicholas L. Rodd +3
We provide a fully quantum-mechanical description of the continuous measurement of wavelike dark matter. Our focus is cavity haloscopes, although our results inform a broad range o…
Suppressed Quantum Effects of Weakly Coupled Waves
Yunjia Bao, Dhong Yeon Cheong, Nicholas L. Rodd +3
Precision experiments increasingly target weakly coupled waves, including axion dark matter and gravitational radiation. Such waves are commonly described as classical fields, yet…
Kinetic Isocurvature Perturbation
Kyu Jung Bae, Dhong Yeon Cheong, Jinn-Ouk Gong +2
We formulate a new class of primordial perturbations called , where the mass density of dark matter is constant relative to the photon…
Intrinsically Quantum Effects of Axion Dark Matter are Undetectable
Yunjia Bao, Dhong Yeon Cheong, Nicholas L. Rodd +3
Is the usual treatment of axion dark matter as a classical field reliable? We show that the answer is subtle: the axion field could well be in a quantum state that has no complete…
Beyond the Starobinsky model after ACT
Min Gi Park, Dhong Yeon Cheong, Seong Chan Park
We revisit higher order corrections to the Starobinsky inflationary model using the most recent P-ACT-LB-BK18 data, which exhibits a mild but definite tension with the predictions…
Composite Hybrid Inflation : Primordial Black Holes and Stochastic Gravitational Waves
Giacomo Cacciapaglia, Dhong Yeon Cheong, Aldo Deandrea +4
We investigate the production of primordial black holes and gravitational waves in composite hybrid inflation. Starting from an effective chiral Lagrangian with a dilaton and pions…
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…
A Quantum Description of Wave Dark Matter
Dhong Yeon Cheong, Nicholas L. Rodd, Lian-Tao Wang
We outline a fundamentally quantum description of bosonic dark matter (DM) from which the conventional classical-wave picture emerges in the limit . As approp…
Effective Theory Approach for Axion Wormholes
Dhong Yeon Cheong, Seong Chan Park, Chang Sub Shin
We employ the effective field theory approach to analyze the characteristics of Euclidean wormholes within axion theories. Using this approach, we obtain non-perturbative instanton…
Composite Hybrid Inflation: Dilaton and Waterfall Pions
Giacomo Cacciapaglia, Dhong Yeon Cheong, Aldo Deandrea +2
We investigate the possibility that inflation originates from a composite field theory, in terms of an effective chiral Lagrangian involving a dilaton and pions. The walking dynami…
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…
Phenomenological implications on a hidden sector from the Festina Lente bound
Kayoung Ban, Dhong Yeon Cheong, Hiroshi Okada +3
We apply the Festina Lente (FL) bound on a hidden sector with gauge symmetries. Since the FL bound puts a lower bound on masses of particles charged under the gauge s…
The Inflaton that Could : Primordial Black Holes and Second Order Gravitational Waves from Tachyonic Instability induced in Higgs- Inflation
Dhong Yeon Cheong, Kazunori Kohri, Seong Chan Park
The running of the Higgs self coupling may lead to numerous phenomena in early universe cosmology. In this paper we introduce a scenario where the Higgs running induces turns in th…
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…
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.
Beyond the Starobinsky model for inflation
Dhong Yeon Cheong, Hyun Min Lee, Seong Chan Park
We single out the Starobinsky model and its extensions among generic gravity as attractors at large field values for chaotic inflation. Treating a curvature term as a…
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…