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Ilya Tokarev

Publications and source records attributed to Ilya Tokarev.

4 recordsLinked to original sources

Neutrino electromagnetic properties and new physics

New effects of nontrivial neutrino electromagnetic properties are investigated on the basis of exact solutions of the modified Dirac equations for neutrinos in dense magnetized rotating matter. The effect of spatial separation of different types of neutrinos and antineutrinos (different in flavors and energies) moving inside dense magnetized rotating matter is predicted. We also describe a new mechanism of a star rotation frequency shift by neutrinos escaping the star (termed "Neutrino Star Turning" mechanism, $νS T$). The $νS T$ mechanism can explain the origin of pulsar "anti-glitches" and ordinary glitches as well. Considering a possible effect of the $νS T$ mechanism on speeding up of a pulsar together with the observational data on pulsars, we obtain a new limit on a neutrino millicharge $q_ν<1.3\times10^{-19}e_0$ that is one of the strongest limits on this value obtained in astrophysics.

hep-ph

Millicharged neutrino with anomalous magnetic moment in rotating magnetized matter

New exact solutions of the modified Dirac equation describing a neutrino with nontrivial electromagnetic properties in extreme background conditions are obtained. Within the quasi-classical treatment the effective Lorentz force that describes the neutrino propagation in the magnetized rotating matter is introduced. We predict the effect of the spatial separation of different types of relativistic neutrinos and antineutrinos (different in flavors and energies) by the magnetized rotating matter of a star. Low energy neutrinos can be even trapped inside the star. We also predict two new phenomena: a new type of the neutrino electromagnetic radiation (termed "Light of (milli)Charged Neutrino", $LCν$) and a new mechanism of the star angular velocity shift due to neutrinos escaping the star (termed "Neutrino Star Turning" mechanism, $νS T$). The possible impact of the $νS T$ mechanism on a supernova explosion yields a new astrophysical limit on the neutrino millicharge $q_ν<1.3\times10^{-19}e_0$. In addition, the $νS T$ mechanism can be also used to explain the origin of pulsar "anti-glitches" and ordinary glitches as well.

hep-ph

How do neutrinos oscillate in moving and accelerated matter?

Neutrino flavour oscillations in a nonuniformly moving matter are considered. The neutrino oscillation resonance condition in presence of matter, in the most general case when matter is moving with acceleration, is derived for the first time. We predict that the effect of matter acceleration can have significant influence on neutrino oscillations pattern in different astrophysical environments.

hep-ph