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Looking for axions and other pseudoscalar particles from CMB spectral distortions and temperature anisotropy

by Dott. Damian Ejlli (INFN, Laboratori Nazionali del Gran Sasso, Italy)

Nov 26, 2014 from 03:00 PM to 04:30 PM

Where Sala riunioni IASF-Bo (II piano), via Gobetti 101

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In this talk I will discuss about axions and other similar particles (axion-like particles) and their connection with the CMB. Indeed an interesting phenomena is the oscillation of scalar or pseudoscalar particles into photons in large scale cosmological magnetic field. It is the presence of the last which makes possible the transition between spin 0 to spin 1 particles. I will present new limits on axion-like particles coupling constant to photons and new limits on axion mass and magnetic field strength based on COBE limits on spectral distortions and sensitivities of future space missions such as PIXIE/PRISM.

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