Prof.
Vyacheslav Dokuchaev
(Institute for Nuclear Research of the Russian Academy of Sciences)
09/10/2015, 15:00
Nuclear physics and particle physics
We describe a promising method for measuring the total dark matter mass near a supermassive black hole at the Galactic center based on observations of nonrelativistic precession of the orbits of fast S0 stars. An analytical expression for the precession angle has been obtained under the assumption of a power-law profile of the dark matter density. The awaited weighing of the dark matter at the...
Alexey Grobov
(NRNU MEPhI)
09/10/2015, 15:15
Mr.
Ruslan Budaev
(NRNU MEPhI)
09/10/2015, 15:30
Nuclear physics and particle physics
We are going to show that any conventional decaying dark matter model, providing an explanation of cosmic antiparticle excess observed by PAMELA and AMS-02, inevitably faces the contradiction with isotropic diffuse gamma-ray background, measured by FERMI/LAT.
Mr.
Maxim Laletin
(NRNU MEPhI)
09/10/2015, 15:45
Nuclear physics and particle physics
As we are going to show, some self-interacting dark matter models may provide an intriguing solution to the "cosmic antiparticle excess vs. isotropic diffuse gamma-ray background" problem.
Ms.
Mariya Lizunova
(ITEP & NRNU "MEPhI")
09/10/2015, 16:00
Nuclear physics and particle physics
We consider a model with a real scalar field with polynomial selfinteraction of the $4^{\text{th}}$ power and a coupled scalar triplet. We demonstrate that there is an analytical solution in the form of domain wall with coupled localised configuration of the scalar triplet. We analyse this new solution and also discuss orientational and translational moduli of the configuration.
Ms.
Mariya Lizunova
(ITEP & NRNU "MEPhI")
09/10/2015, 16:15
Nuclear physics and particle physics
We study excitations of solitary waves - the kinks - in scalar models with
degree eight polynomial self-interaction in $(1+1)$ dimensions. We perform
numerical studies of scattering of two kinks with an exponential asymptotic
off each other and analyse the occurring resonance phenomena. We connect these
phenomena to the energy exchange between the translational and the vibrational
modes...
