• Corpus ID: 251554559

Non-Standard Neutrino Self-Interactions Can Cause Neutrino Flavor Equipartition Inside the Supernova Core

  title={Non-Standard Neutrino Self-Interactions Can Cause Neutrino Flavor Equipartition Inside the Supernova Core},
  author={Sajad Abbar},
We show that non-standard neutrino self-interactions can lead to total flavor equipartition in a dense neutrino gas, such as those expected in core-collapse supernovae. In this first investigation of this phenomenon in the multi-angle scenario, we demonstrate that such a flavor equipartition can occur on very short scales, and therefore very deep inside the newly formed proto-neutron star, with a possible significant impact on the physics of core-collapse supernovae. Our findings imply that future… 

Figures from this paper



New effects of non-standard self-interactions of neutrinos in a supernova

Neutrino self-interactions are known to lead to non-linear collective flavor oscillations in a core-collapse supernova. We point out new possible effects of non-standard self-interactions (NSSI) of

Flavor evolution of the neutronization neutrino burst from an O-Ne-Mg core-collapse supernova.

These neutrino spectral features offer a unique potential probe of the conditions in the supernova environment and may allow us to distinguish between O-Ne-Mg and Fe core-collapse supernovae.

Nonstandard neutrino self-interactions in a supernova and fast flavor conversions

We study the effects of non-standard self-interactions (NSSI) of neutrinos streaming out of a core-collapse supernova. We show that with NSSI, the standard linear stability analysis gives rise to

Flavor oscillations in the supernova hot bubble region: nonlinear effects of neutrino background.

Contrary to previous studies, it is found that in the neutrino-driven wind the electron fraction Y(e) always stays below 0.5, corresponding to a neutron-rich environment as required by r-process nucleosynthesis.

Core-collapse supernovae stymie secret neutrino interactions

Beyond-the-Standard-Model interactions of neutrinos among themselves -- {\it secret interactions} -- in the supernova core may prevent the shock revival, halting the supernova explosion. Besides, if

Coherent development of neutrino flavor in the supernova environment.

It is found that in the normal (inverted) mass hierarchy the more tangentially-propagating neutrinos and antineutrinos can initiate collective, simultaneous medium-enhanced flavor conversion of these particles across broad ranges of energy and propagation direction.

Neutrino nonstandard interactions via light scalars in the Earth, Sun, supernovae, and the early Universe

Non-standard interactions (NSI) of neutrinos with matter mediated by a scalar field would induce medium-dependent neutrino masses which can modify oscillation probabilities. Generating observable

Neutrino flavor transformation in supernova as a probe for nonstandard neutrino-scalar interactions

  • Yue YangJ. Kneller
  • Physics
    Proceedings of The 20th International Workshop on Neutrinos — PoS(NuFACT2018)
  • 2019
We explore the possibility of probing the nonstandard interactions between the neutrino and a hypothetical massive scalar or pseudoscalar via neutrino flavor transformation in supernovae. We find

High energy neutrino telescopes as a probe of the neutrino mass mechanism

We show that measurements of the spectral shape and flavor ratios of high energy astrophysical neutrinos at neutrino telescopes can be sensitive to the details of the neutrino mass mechanism. We