Suppressed Magnetogenesis from Ultralight Dark Matter due to Finite Conductivity

Ramkishor Sharma, Samarth Majumdar, Divya Sachdeva

Recently, a mechanism for generating astrophysically relevant magnetic fields via ultralight pseudoscalar dark matter, through the coupling term $g_{\varphi \gamma }\varphi F_{\mu \nu }{\tilde{F}}^{\mu \nu }$ in t…