The neutrino mass ordering (NMO) is one of the major contemporary questions in neutrino physics. Determining the NMO is the primary goal of the Jiangmen Underground Neutrino Observatory (JUNO), a recently operational next-generation reactor experiment. Furthermore, the advent of JUNO ushers in the precision era of neutrino oscillation physics. This enbales us, for the first time, to probe...
Focusing on supercooled PTs in models with classical scale symmetry, we investigate the limitations of derivative expansions in constructing a thermal EFT description for bubble nucleation. We show that derivative expansion for gauge field fluctuations diverges because the gauge field mass varies strongly between the high- and low-temperature phases. By computing the gauge fluctuation...
Coherent Elastic neutrino Nucleus Scattering at spallation sources such as the ESS, offer new exciting possibilities to also study physics beyond the standard model in a small scale experiment. There is an ongoing effort att Lund and Uppsala universities to explore these possibilities in more detail. As an example, I will describe the possibility to search for the X17 - a hypothetical light...
The axion is a hypothetical pseudoscalar particle that arises from the Peccei-Quinn solution for the strong CP problem and simultaneously be a strong candidate for dark matter. Recent early-universe simulations for the post-inflation scenario have indicated a preference for a higher mass corresponding to above 10 GHz. This has motivated efforts to probe this high frequency regime that...
