Zobrazeno 1 - 10
of 414
pro vyhledávání: '"Li, Hai‐jun"'
Autor:
Li, Hai-Jun, Zhou, Yu-Feng
We introduce a novel level crossing in the mass mixing between two QCD axions, one canonical QCD axion and one $Z_{\mathcal N}$ QCD axion. The level crossing can take place at the QCD phase transition critical temperature or slightly before it, depen
Externí odkaz:
http://arxiv.org/abs/2408.00267
We obtain a stringent upper limit on axion-photon coupling from the 1038 days gamma-ray observations of the TeV blazar Markarian 421. The long-term VHE gamma-ray spectra are measured by the collaborations Fermi-LAT and HAWC from 2015 June to 2018 Jul
Externí odkaz:
http://arxiv.org/abs/2406.00387
We present the limits on photon to axionlike particle (ALP) coupling from the 10-year period observations of the TeV BL Lacertae blazar 1ES 1215+303 (with redshift $z=0.130$). The contemporaneous gamma-ray spectra are measured by the collaborations F
Externí odkaz:
http://arxiv.org/abs/2312.05555
The even light QCD axion called the $Z_{\mathcal N}$ axion can both solve the strong CP problem and account for the dark matter (DM). We point out that the single and double level crossings can naturally take place in the mass mixing between the $Z_{
Externí odkaz:
http://arxiv.org/abs/2310.02126
Autor:
Li, Hai-Jun
It is shown that the required high quality of the Peccei-Quinn (PQ) symmetry can be a natural outcome of the multiple QCD axion models. In the axiverse, a hypothetical mass mixing between the QCD axions and axion-like particles (ALPs) can occur, whic
Externí odkaz:
http://arxiv.org/abs/2307.09245
The supermassive black holes (SMBHs) are ubiquitous in the center of galaxies, although the origin of their massive seeds is still unknown. In this paper, we investigate the SMBHs formation from the QCD axion bubbles. In this case, the primordial bla
Externí odkaz:
http://arxiv.org/abs/2304.00939
Autor:
Li, Hai-Jun
The QCD axion bubbles can be formed due to an extra Peccei-Quinn (PQ) symmetry breaking in the early Universe. In this paper, we investigate the QCD axion bubbles formation from the PQ symmetry broken by hidden $SU(N)_H$ gauge interactions after infl
Externí odkaz:
http://arxiv.org/abs/2303.04537
Autor:
Li, Hai-Jun, Chao, Wei
We investigate the photon-axionlike particle (ALP) oscillation effects on TeV gamma-ray spectral irregularities from the uncertain redshift active galactic nuclei (AGN) VER J0521+211. The gamma-ray spectra are measured by Fermi-LAT and VERITAS with t
Externí odkaz:
http://arxiv.org/abs/2211.00524
Although axion-like particles (ALPs) are popular dark matter candidates, their mass generation mechanisms as well as cosmic thermal evolutions are still unclear. In this letter, we propose a new mass generation mechanism of ALP during the electroweak
Externí odkaz:
http://arxiv.org/abs/2210.13233
Autor:
Yan, Li-Ming1 (AUTHOR), Li, Hai-Jun2 (AUTHOR), Fan, Qi2 (AUTHOR), Xue, Yi-Dong2 (AUTHOR), Wang, Tao2 (AUTHOR) wangtao@yau.edu.cn
Publikováno v:
PLoS ONE. 8/1/2024, Vol. 19 Issue 8, p1-11. 11p.