Axion Dark Matter ·
QCD's fix, the cosmos's filling
un
seel
.com · Peccei-Quinn 1977 · μeV scalar field · m
a
f
a
≈ m
π
f
π
|θ̄| ≲
10⁻¹⁰
f
a
~
10⁹–10¹² GeV
phase
—
Axion field a(x)
Photon γ (Primakoff)
QCD vacuum / θ-needle
Kerr horizon / supernova
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.com · Axion Dark Matter