Axion dark matter resonantly heats interstellar plasma when its mass matches the plasma frequency, yielding forecast upper limits on the axion-photon coupling g as strong as about 2e-14 GeV^-1 for a 1 microgauss field.
Bosonic Coherent Motions in the Universe
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abstract
We mini-review the role of fundamental spin-0 bosons as bosonic coherent motion (BCM) in the Universe. The fundamental spin-0 bosons have the potential to account for the baryon number generation, cold dark matter (CDM) via BCM, dark energy, and inflation. Among these, here we focus on the CDM possibility because it can be experimentally tested with the current experimental techniques. We also comment briefly on the panoply of the other roles of spin-0 bosons.
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Forecast constraints on the axion-photon coupling from interstellar medium heating
Axion dark matter resonantly heats interstellar plasma when its mass matches the plasma frequency, yielding forecast upper limits on the axion-photon coupling g as strong as about 2e-14 GeV^-1 for a 1 microgauss field.