We study three-flavor neutrino oscillations in the early universe in the presence of neutrino
chemical potentials. We take into account all effects from the background medium, ie, …

… 1, the intensities I j ( E ) ∝ d N j ∕ d E are multiplied with E 2 which implies that the area
∫ d E E I j ( E ) is proportional to the energy density contained in particles of type j . Thus the …

We explore potential of current and next-generation γ-ray telescopes for the detection of
weak magnetic fields in the intergalactic medium. We demonstrate that using two …

The process of condensation in the system of scalar bosons with weak λ φ 4 interaction is
considered. The Boltzmann kinetic equation is solved numerically. We consider two kinetic …

Distortion of the equilibrium spectra of cosmic neutrinos due to interaction with hotter
electrons and positrons in the primeval cosmic plasma is considered. The set of integro-differential …

… Raffelt), semikoz@ms2.inr.ac.ru (DV Semikoz) 1 Also: ITEP, Bol. Cheremushkinskaya 25,
Moscow 113259, Russia. … [21] AD Dolgov, SH Hansen, DV Semikoz, Nucl. Phys. B 524 (1998) …

The European Pulsar Timing Array (EPTA) and Indian Pulsar Timing Array (InPTA) collaborations
have measured a low-frequency common signal in the combination of their second …

Applying our recently developed propagation code we review extragalactic neutrino fluxes
above 10 14 eV in various scenarios and how they are constrained by current data. We …

We study the kinetic regime of the Bose condensation of scalar particles. The Boltzmann
equation is solved numerically. We consider two kinetic stages. At the first stage the condensate …

In the early universe or in some regions of supernovas, the neutrino refractive index is
dominated by the neutrinos themselves. Several previous studies have found numerically that …