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The large neutrino density in the deep interior of core-collapse supernovae and compact binary merger remnants makes neutrino flavor evolution non-linear because of the coherent forward scattering of neutrinos among themselves. Under the…

High Energy Astrophysical Phenomena · Physics 2023-08-16 Shashank Shalgar , Irene Tamborra

In a core collapse supernova, collective oscillations of neutrinos emitted by the proto-neutron star significantly modifies the partition of energy between different flavors in a way which is potentially important for the nucleosynthesis of…

High Energy Astrophysical Phenomena · Physics 2017-03-29 T. Bulmus , Y. Pehlivan

Neutrinos propagating in dense neutrino media such as core-collapse supernovae and neutron star merger remnants can experience the so-called fast flavor conversions on scales much shorter than those expected in vacuum. A very generic class…

High Energy Astrophysical Phenomena · Physics 2022-03-31 Sajad Abbar , Francesco Capozzi

In the early Universe, or near a supernova core, neutrino flavor evolution may be affected by coherent neutrino-neutrino scattering. We develop a microscopic picture of this phenomenon. We show that coherent scattering does not lead to the…

High Energy Physics - Phenomenology · Physics 2009-11-10 Alexander Friedland , Cecilia Lunardini

We calculate coherent neutrino and antineutrino flavor transformation in the supernova environment, for the first time including a self-consistent treatment of forward scattering-induced coupling and entanglement of intersecting…

Astrophysics · Physics 2008-11-26 Huaiyu Duan , George M. Fuller , J. Carlson , Yong-Zhong Qian

We give the first self-consistent calculation of the effect of the scattered neutrino halo on flavor evolution in supernovae. Our example case is an O-Ne-Mg core collapse supernova neutronization neutrino burst. We find that the addition of…

High Energy Astrophysical Phenomena · Physics 2013-05-01 John F. Cherry , J. Carlson , Alexander Friedland , George M. Fuller , Alexey Vlasenko

When the neutrino density is very high, as in core-collapse supernovae, neutrino-neutrino interactions are not negligible and can appreciably affect the evolution of flavour. The physics of these phenomena is briefly highlighted, and their…

High Energy Physics - Phenomenology · Physics 2009-05-18 Irene Tamborra

Predicting the flavor composition of neutrinos from supernovae is a challenging task, primarily due to the high neutrino densities at their core. In such an environment, neutrino self-interactions give rise to collective effects that have…

High Energy Physics - Phenomenology · Physics 2025-06-03 Antonio Capanema , Yago Porto , Maria Manuela Saez

Neutrino flavor evolution in core-collapse supernovae, neutron-star mergers, or the early universe is dominated by neutrino-neutrino refraction, often spawning "self-induced flavor conversion", i.e., shuffling of flavor among momentum…

High Energy Physics - Phenomenology · Physics 2016-06-22 Sovan Chakraborty , Rasmus Sloth Hansen , Ignacio Izaguirre , Georg Raffelt

We give a very brief overview of collective effects in neutrino oscillations in core collapse supernovae where refractive effects of neutrinos on themselves can considerably modify flavor oscillations, with possible repercussions for future…

High Energy Physics - Phenomenology · Physics 2009-09-11 Guenter Sigl , Ricard Tomas , Andreu Esteban-Pretel , Sergio Pastor , Alessandro Mirizzi , Georg G. Raffelt , Pasquale D. Serpico

We all know that in the dense anisotropic interior of the star, neutrino-neutrino forward-scattering can lead to fast collective neutrino oscillations, which has striking consequences on flavor dependent neutrino emission and can be crucial…

High Energy Physics - Phenomenology · Physics 2021-01-06 Soumya Bhattacharyya

Neutrinos in a core-collapse supernova undergo coherent flavor transformations in their own background. We explore this phenomenon during the cooling stage of the explosion. Our three-flavor calculations reveal qualitatively new effects…

High Energy Physics - Phenomenology · Physics 2010-05-25 Alexander Friedland

We perform one-zone simulations of the infall epoch of a pre-supernova stellar core in the presence of neutrino flavor changing scattering interactions. Our calculations give a self-consistent assessment of the relationship between flavor…

Astrophysics · Physics 2008-11-26 Philip S. Amanik , George M. Fuller

We make a strong case that the fast neutrino-flavor conversion, one of the collective flavor oscillation modes, commonly occurs in core-collapse supernovae (CCSNe). It is confirmed in the numerical data obtained in realistic simulations of…

High Energy Astrophysical Phenomena · Physics 2020-03-04 Taiki Morinaga , Hiroki Nagakura , Chinami Kato , Shoichi Yamada

Neutrino flavor transformations in core-collapse supernovae and binary neutron star mergers represent a complex and unsolved problem that is integral to our understanding of the dynamics and nucleosynthesis in these environments. The high…

High Energy Physics - Phenomenology · Physics 2023-05-02 Amol V. Patwardhan , Michael J. Cervia , Ermal Rrapaj , Pooja Siwach , A. B. Balantekin

In this paper we study the dynamics of flavor transformation for neutrinos propagating in the very dense environment of astrophysical compact objects as Type II supernova in post collapse phase and proto-neutron stars. The analysis is based…

High Energy Astrophysical Phenomena · Physics 2012-04-23 Marcello Baldo , Vincenzo Palmisano

Neutrino flavor evolution inside a core-collapse supernova is a topic of active research. The core of a supernova is an intense source of neutrinos and antineutrinos. Self-interaction among neutrinos (as well as antineutrinos) gives rise to…

High Energy Astrophysical Phenomena · Physics 2025-02-20 Indrajit Ghose , Amitabha Lahiri

Flavor-dependent neutrino emission is critical to the evolution of a supernova and its neutrino signal. In the dense anisotropic interior of the star, neutrino-neutrino forward-scattering can lead to fast collective neutrino oscillations,…

High Energy Physics - Phenomenology · Physics 2021-02-22 Soumya Bhattacharyya , Basudeb Dasgupta

Neutrinos emitted from a core-collapse supernova can experience collective flavor transformation because of high neutrino fluxes. As a result, neutrinos of different flavors can have their energy spectra (partially) swapped, a phenomenon…

High Energy Astrophysical Phenomena · Physics 2010-04-21 Huaiyu Duan

The usual treatments of the neutrino flavor-evolution, beyond a surface above the last scattering, assume identical angular distributions at this distance for the different initial (unmixed) flavors, and for particles and antiparticles.…

High Energy Astrophysical Phenomena · Physics 2016-03-02 R. F. Sawyer
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