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Collective neutrino oscillationsin various external fields.

Grant number: 11/50309-2
Support Opportunities:Scholarships in Brazil - Post-Doctoral
Effective date (Start): October 01, 2011
Effective date (End): May 31, 2015
Field of knowledge:Physical Sciences and Mathematics - Physics - Elementary Particle Physics and Fields
Principal Investigator:Dmitri Maximovitch Guitman
Grantee:Maxim Dvornikov
Host Institution: Instituto de Física (IF). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Associated research grant:07/03726-1 - Quantization and problems of the quantum theory of fields, AP.TEM
Associated scholarship(s):13/13884-4 - Nonlinear interactions in dense plasmas, BE.EP.PD


Oscillation of astrophysical and cosmological neutrinos is an integral part of the evolution of supernova and the early universe. The dense background matter and strong magnetic fields, which are present in these astrophysical and cosmological media, are known to significantly influence neutrino oscillations. Recently it was discovered that neutrino self interaction, which appears in high density neutrino gas, can result in collective effects in neutrino oscillations. This phenomenon was also shown to drastically change the picture of neutrino oscillations. The main goals of this research project are: (i) to study neutrino collective oscillations on the basis of quantum kinetic approach and within the method of exact solutions of wave equations, (ii) to analyze the neutrino evolution equation, accounting for the self interaction term, using the methods of nonlinear plasma physics, and (iii) to apply the general theory of neutrino collective oscillations to the description of neutrino evolution in various realistic situations, like supernova and the early universe. (AU)

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Scientific publications (6)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
DVORNIKOV, MAXIM. Attractive interaction between ions inside a quantum plasma structure. JOURNAL OF PLASMA PHYSICS, v. 81, n. 3, . (11/50309-2)
DVORNIKOV, MAXIM. Neutrino interaction with background matter in a non-inertial frame. MODERN PHYSICS LETTERS A, v. 30, n. 23, . (11/50309-2)
DVORNIKOV, MAXIM. Galvano-rotational effect induced by electroweak interactions in pulsars. Journal of Cosmology and Astroparticle Physics, n. 5, . (11/50309-2)
DVORNIKOV, MAXIM; SEMIKOZ, VICTOR B.. Generation of the magnetic helicity in a neutron star driven by the electroweak electron-nucleon interaction. Journal of Cosmology and Astroparticle Physics, n. 5, . (11/50309-2)
DVORNIKOV, MAXIM. Impossibility of the strong magnetic fields generation in an electron-positron plasma. Physical Review D, v. 90, n. 4, . (11/50309-2, 13/13884-4)

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