Zobrazeno 1 - 10
of 76
pro vyhledávání: '"Sharov, G. S."'
Autor:
Sharov, G. S., Sinyakov, E. S.
We analyze how predictions of cosmological models depend on a choice of described observational data, restrictions on flatness, and how this choice can alleviate the $H_0$ tension. These effects are demonstrated in the $w$CDM model in comparison with
Externí odkaz:
http://arxiv.org/abs/2002.03599
Autor:
Sharov, G. S., Vasiliev, V. O.
Publikováno v:
Mathematical Modelling and Geometry, V. 6, No 1, pp. 1 - 20 (2018)
We explore recent estimations of the Hubble parameter $H$ depending on redshift $z$, which include 31 $H(z)$ data points measured from differential ages of galaxies and 26 data points, obtained with other methods. We describe these data together with
Externí odkaz:
http://arxiv.org/abs/1807.07323
Autor:
Sharov, G. S.
Publikováno v:
JCAP 06 (2016) 023
Observational manifestations of accelerated expansion of the universe, in particular, recent data for Type Ia supernovae, baryon acoustic oscillations, for the Hubble parameter $H(z)$ and cosmic microwave background constraints are described with dif
Externí odkaz:
http://arxiv.org/abs/1506.05246
Autor:
Sharov, G. S., Vorontsova, E. G.
Publikováno v:
JCAP 10 (2014) 057
For different gravitational models we consider limitations on their parameters coming from recent observational data for type Ia supernovae, baryon acoustic oscillations, and from 34 data points for the Hubble parameter $H(z)$ depending on redshift.
Externí odkaz:
http://arxiv.org/abs/1407.5405
Autor:
Sharov, G. S.
Various string models of mesons and baryons include a string carrying 2 or 3 massive points (quarks or antiquarks). Rotational states (planar uniform rotations) of these systems generate quasilinear Regge trajectories and may be used for describing e
Externí odkaz:
http://arxiv.org/abs/1305.3985
Autor:
Grigorieva, O. A., Sharov, G. S.
Publikováno v:
International Journal of Modern Physics D. Vol. 22, No. 13 (2013) 1350075
We consider the gravitational model with additional spatial dimensions and anisotropic pressure which is nonzero only in these dimensions. Cosmological solutions in this model include accelerated expansion of the Universe at late age of its evolution
Externí odkaz:
http://arxiv.org/abs/1211.4992
Autor:
Sharov, G. S.
We consider various hadron models with a string carrying $n=3$ massive points (quarks): Y configuration, linear baryon model $q$-$q$-$q$ and the closed string. For these models classical rotational states (planar uniform rotations) are tested for sta
Externí odkaz:
http://arxiv.org/abs/1004.1518
Autor:
Sharov, G. S.
Publikováno v:
Phys.Rev.D79:114025,2009
For the closed string carrying 2 or 3 point-like masses the stability problem for central and linear rotational states is considered. This problem is important for applications of these model to describing baryons, glueballs or other exotic hadrons.
Externí odkaz:
http://arxiv.org/abs/0802.3032
Autor:
Sharov, G. S.
The closed string carrying $n$ point-like masses is considered as the model of a baryon ($n=3$), a glueball ($n=2$ or 3) or another exotic hadron. For this system the rotational states are obtained and classified. They correspond to exact solutions o
Externí odkaz:
http://arxiv.org/abs/0712.4052
Autor:
Sharov, G. S.
The closed relativistic string carrying two point-like masses is considered as the model of a glueball with two constituent gluons. Here the gluon-gluon interaction is simulated by a pair of strings. For this system exact solutions of classical equat
Externí odkaz:
http://arxiv.org/abs/hep-ph/0612373