Nuclear, Particle, Astroparticle and Cosmology (NUPAC) Seminars
The Effect of Collisions on Fast Collective Neutrino Oscillations
Presented by Dr. Josh Martin (LANL)
Extreme astrophysical environments such as core collapse supernovae (CCSNe) produce high number densities and fluxes of neutrinos during their evolution. Through coherent forward scattering, neutrinos along different trajectories develop correlations in their flavor histories which can result in large scale collective flavor conversion among the many correlated neutrinos. The details of this collective behavior both in space and momentum is strongly dependent on the properties of the spectrum of the neutrinos. In this talk I will consider the (subdominant) effect of elastic incoherent scattering of neutrinos on nucleons and how the flavor evolution of the neutrino gas is changed in both the strong and weak elastic scattering limits. I will do so by presenting some analytic insight and the results of several representative simulations of the dynamic evolution of the neutrino gas in an axially symmetric space.
2:00 pm, Tuesday, March 23, 2021
Zoom,
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