Speaker
Description
We investigate how density-dependent axial-vector coupling quenching and nucleon effective mass modify neutrino transport in core-collapse supernovae (CCSNe). We implement these in-medium effects in neutrino absorption, emission, and scattering opacities used by NULIB and perform simulations of the Woosley–Weaver 15M⊙ progenitor (s15s7b2) with the GR1D code. The effective-mass correction primarily alters charged-current absorption and nucleon–nucleon bremsstrahlung, producing non-monotonic, radius- and time-dependent changes in neutrino luminosities through a competition between reduced emissivity and a shifted decoupling region. In contrast, axial-coupling quenching suppresses all weak rates and imprints most clearly on the prompt νe burst, where transport is controlled by rapid opacity changes near shock breakout. These results demonstrate that consistent dense-matter microphysics can leave distinct, potentially observable signatures in CCSN neutrino signals through
transport effects.