New Constraints on a Light Spinless Particle Coupled to Photons
نویسنده
چکیده
We obtain new stringent constraints on a light spinless particle φ coupled only to photons at low energies, considering its effects on the extragalactic photon background, the blackbody spectrum of the CMBR and the cosmological abundance of deuterium.
منابع مشابه
On a Light Spinless Particle Coupled to Photons
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تاریخ انتشار 1997