64 citations · 169 across the 4 of their papers we have counts for
10 papers
Thermal QCD Axions across Thresholds
Francesco D'Eramo, Fazlollah Hajkarim, Seokhoon Yun
Thermal axion production in the early universe goes through several mass thresholds, and the resulting rate may change dramatically across them. Focusing on the KSVZ and DFSZ frame…
Vector dark matter from a gauged symmetry
Takaaki Nomura, Hiroshi Okada, Seokhoon Yun
We propose a scenario of dark sector described by a hidden gauge symmetry which is broken by a vacuum expectation value(VEV) of a scalar multiplet. We discuss a general mas…
Cooling of young neutron stars and dark gauge bosons
Deog Ki Hong, Chang Sub Shin, Seokhoon Yun
The standard cooling scenario in the presence of nucleon superfluidity fits rather well to the observation of the neutron stars. It implies that the stellar cooling arguments could…
Axion and neutrino mass from a hidden gauge symmetry model
Takaaki Nomura, Hiroshi Okada, Seokhoon Yun
We propose a model of dark sector described by gauged hidden symmetry in which neutrino masses are generated at one-loop level and axion is induced by assigning Peccei-Qui…
Axion-photon-dark photon oscillation and its implication for 21 cm observation
Kiwoon Choi, Hyeonseok Seong, Seokhoon Yun
We examine the resonant conversion of axion-like particle (ALP) or dark photon to the electromagnetic photon in the early Universe, which takes place due to the ALP-photon-dark pho…
Axion scales and couplings with Stückelberg mixing
Kiwoon Choi, Chang Sub Shin, Seokhoon Yun
We study the axion field range and low energy couplings in models with Stückelberg mixing between axions and gauge bosons. It is noted that the gauge-invariant axion combina…