Neutrinos from dense environments: Flavor mechanisms, theoretical approaches, observations, and new directions
MC Volpe - Reviews of Modern Physics, 2024 - APS
Neutrino masses and mixings produce vacuum oscillations, an established quantum
mechanical phenomenon. In matter, the Mikheev-Smirnov-Wolfenstein effect, due to …
mechanical phenomenon. In matter, the Mikheev-Smirnov-Wolfenstein effect, due to …
Neutrinos and nucleosynthesis of elements
Neutrinos are known to play important roles in many astrophysical scenarios from the early
period of the big bang to current stellar evolution being a unique messenger of the fusion …
period of the big bang to current stellar evolution being a unique messenger of the fusion …
Towards a precision calculation of in the Standard Model II: Neutrino decoupling in the presence of flavour oscillations and finite-temperature QED
We present in this work a new calculation of the standard-model benchmark value for the
effective number of neutrinos, $ N_ {\rm eff}^{\rm SM} $, that quantifies the cosmological …
effective number of neutrinos, $ N_ {\rm eff}^{\rm SM} $, that quantifies the cosmological …
Neutrino decoupling including flavour oscillations and primordial nucleosynthesis
We revisit the decoupling of neutrinos in the early universe with flavour oscillations. We
rederive the quantum kinetic equations which determine the neutrino evolution based on a …
rederive the quantum kinetic equations which determine the neutrino evolution based on a …
A precision calculation of relic neutrino decoupling
We study the distortions of equilibrium spectra of relic neutrinos due to the interactions with
electrons, positrons, and neutrinos in the early Universe. We solve the integro-differential …
electrons, positrons, and neutrinos in the early Universe. We solve the integro-differential …
Relic neutrino decoupling with flavour oscillations revisited
We study the decoupling process of neutrinos in the early universe in the presence of three-
flavour oscillations. The evolution of the neutrino spectra is found by solving the …
flavour oscillations. The evolution of the neutrino spectra is found by solving the …
Evolution of collisional neutrino flavor instabilities in spherically symmetric supernova models
We implement a multigroup and discrete-ordinate neutrino transport model in spherical
symmetry which allows to simulate collective neutrino oscillations by including realistic …
symmetry which allows to simulate collective neutrino oscillations by including realistic …
Collisional instabilities of neutrinos and their interplay with fast flavor conversion in compact objects
Fast and collisional flavor instabilities possibly occur in the neutrino decoupling regions of
core-collapse supernovae and neutron-star mergers. To gain a better understanding of the …
core-collapse supernovae and neutron-star mergers. To gain a better understanding of the …
Fast flavor transformations
The neutrino fast flavor instability (FFI) can change neutrino flavor on time scales of
nanoseconds and length scales of centimeters. It is expected to be ubiquitous in core …
nanoseconds and length scales of centimeters. It is expected to be ubiquitous in core …
Fast neutrino flavor conversions in a supernova: Emergence, evolution, and effects
Fast flavor conversions (FFCs) of neutrinos, which can occur in core-collapse supernovae
(CCSNe), are multiangle effects. They depend on the angular distribution of the neutrino's …
(CCSNe), are multiangle effects. They depend on the angular distribution of the neutrino's …