{"id":2908,"date":"2023-09-05T11:27:51","date_gmt":"2023-09-05T02:27:51","guid":{"rendered":"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/?post_type=seminar&p=2908"},"modified":"2023-09-05T11:32:17","modified_gmt":"2023-09-05T02:32:17","slug":"primordial-magnetogenesis-in-multicomponent-dark-matter","status":"publish","type":"seminar","link":"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/seminar\/2908\/","title":{"rendered":"Primordial magnetogenesis in multicomponent dark matter"},"content":{"rendered":"
\n
\n

“KMI theory seminar” 25th Sep. (Mon)\u00a0 14\uff1a00 –<\/span><\/strong><\/span>
\nDate: September 25th (Mon.) 14:00 – 16:00
\nPlace: ES635
\nSpeaker: Dr. Filippo Anzuini (University of Melbourne)
\nTitle: Primordial magnetogenesis in multicomponent dark matter<\/span><\/p>\n

\nAbstract: The existence of large-scale magnetic fields permeating galaxies, clusters of galaxies
\nand cosmic voids can be explained via the generation of magnetic field \u201cseeds\u201d in the Early Universe.
\nIn this picture, magnetogenesis takes place in a system composed by the primordial plasma and dark matter, leading to a complex dynamics that requires a numerical approach.
\nUsing lattice simulations, we show that the production of intense primordial magnetic fields is possible assuming that photons couple with axion-like particles (ALPs), QCD axions and dark photons. Once the Hubble parameter becomes smaller than the axion mass, the latter starts to oscillate, and part of its energy density is spent producing gauge fields.
\nWhile the energy density of dark photons becomes higher than the one of the axion, the high conductivity of the primordial plasma damps the oscillations of the photon field even for relatively large axion-photon couplings. However, the interaction between photons and dark photons leads to a much more efficient sourcing of electromagnetic fields, boosting the efficiency of the magnetic dynamo and allowing for a viable mechanism for the generation of intense primordial magnetic fields.<\/p>\n

Please join the seminar!<\/p>\n<\/div>\n<\/div>\n","protected":false},"featured_media":0,"template":"","tags":[],"seminar_category":[53],"acf":{"s_now_accepting":true,"s_date_order":"2023-09-25 14:00:00","s_date_end":null,"s_date_text":"Monday, Sep. 25th, 2023","s_text":"Dr. Filippo Anzuini (University of Melbourne)","s_place":"ES635 ","s_place_other":"","s_categoryother":"","s_poster":"","s_poster2":"","s_slide":""},"yoast_head":"\nPrimordial magnetogenesis in multicomponent dark matter - KMI - Nagoya University<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/seminar\/2908\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Primordial magnetogenesis in multicomponent dark matter - KMI - Nagoya University\" \/>\n<meta property=\"og:description\" content=\"“KMI theory seminar” 25th Sep. (Mon)\u00a0 14\uff1a00 – Date: September 25th (Mon.) 14:00 – 16:00 Place: ES635 Speaker: Dr. Filippo Anzuini (University of Melbourne) Title: Primordial magnetogenesis in multicomponent dark matter Abstract: The existence of large-scale magnetic fields permeating galaxies, clusters of galaxies and cosmic voids can be explained via the generation of magnetic field \u201cseeds\u201d in the Early Universe. 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(Mon)\u00a0 14\uff1a00 – Date: September 25th (Mon.) 14:00 – 16:00 Place: ES635 Speaker: Dr. Filippo Anzuini (University of Melbourne) Title: Primordial magnetogenesis in multicomponent dark matter Abstract: The existence of large-scale magnetic fields permeating galaxies, clusters of galaxies and cosmic voids can be explained via the generation of magnetic field \u201cseeds\u201d in the Early Universe. 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