26 citations · 55 across the 6 of their papers we have counts for
6 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…
Axionic Wormholes with Correction in Metric and Palatini Formulations
Yoshiki Kanazawa
QCD axion models have been proposed as a solution to the strong CP problem. QCD instanton effects explicitly violate the global U(1) Peccei-Quinn (PQ) symmetry, and the axion poten…
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…
Observing Axion Emission from Supernova with Collider Detectors
Shoji Asai, Yoshiki Kanazawa, Takeo Moroi +1
We consider a possibility to observe the axion emission from a nearby supernova (SN) in the future, which can be known in advance by the pre-SN alert system, by collider detectors…
Axion Quality Problem Alleviated by Non-Minimal Coupling to Gravity
Koichi Hamaguchi, Yoshiki Kanazawa, Natsumi Nagata
Global symmetries are expected to be violated by gravity, which may cause a serious problem to models based on these symmetries. A famous example is the Peccei-Quinn solution to th…
Supernova-scope for the Direct Search of Supernova Axions
Shao-Feng Ge, Koichi Hamaguchi, Koichi Ichimura +5
If a supernova explosion occurs within a few hundred parsecs from the Earth, a huge number of axions, in addition to neutrinos, may arrive at the Earth. In this paper, we discuss i…