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Seminars/Colloquia

Primordial magnetic fields as the key to the baryon asymmetry of the Universe

by Dr. Kohei Kamada (Arizona State University)

Europe/Berlin
3343 Handbibliothek Theorie (Physik-Department)

3343 Handbibliothek Theorie

Physik-Department

Description
Abstract: Recent observations of TeV blazars by Fermi identified deficits of secondary GeV cascade photons. These observations can be explained by intergalactic magnetic fields, which may have a primordial origin. If magnetic fields are generated before the electroweak symmetry breaking, nontrivial interaction between (hyper)magnetic fields and other particles can cause some interesting and non negligible phenomena in the early Universe. In this talk, I will show that the baryon asymmetry can be generated by the chiral anomaly of the SM and this mechanism might be responsible for the present baryon asymmetry of the Universe. If this mechanism is responsible for the present Universe, the BSM physics is needed for the generation of (hyper)magnetic fields but not for the baryogenesis.
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