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Ballistic Dark Matter oscillates above CDM
Anirban Das, Basudeb Dasgupta, Rishi Khatri
Dark matter may have been relativistic and collisional until relatively late times and become cold and collisionless after a phase transition before the matter-radiation equality o…
Normal-mode Analysis for Collective Neutrino Oscillations
Sagar Airen, Francesco Capozzi, Sovan Chakraborty +3
In an interacting neutrino gas, collective modes of flavor coherence emerge that can be propagating or unstable. We derive the general dispersion relation in the linear regime that…
Collisional triggering of fast flavor conversions of supernova neutrinos
Francesco Capozzi, Basudeb Dasgupta, Alessandro Mirizzi +2
Fast flavor conversions of supernova neutrinos, possible near the neutrinosphere, depends on an interesting interplay of collisions and neutrino oscillations. Contrary to naive exp…
A few moments to diagnose fast flavor conversions of supernova neutrinos
Basudeb Dasgupta, Alessandro Mirizzi, Manibrata Sen
Neutrinos emitted from a supernova may undergo flavor conversions almost immediately above the core, with possible consequences for supernova dynamics and nucleosynthesis. However,…
Model-independent diagnostic of self-induced spectral equalization versus ordinary matter effects in supernova neutrinos
Francesco Capozzi, Basudeb Dasgupta, Alessandro Mirizzi
Self-induced flavor conversions near the supernova (SN) core can make the fluxes for different neutrino species become almost equal, potentially altering the dynamics of the SN exp…
Sterile Neutrinos with Secret Interactions -- Cosmological Discord?
Xiaoyong Chu, Basudeb Dasgupta, Mona Dentler +2
Several long-standing anomalies from short-baseline neutrino oscillation experiments -- most recently corroborated by new data from MiniBooNE -- have led to the hypothesis that ext…