Zobrazeno 1 - 10
of 107
pro vyhledávání: '"Kononogov, S. A."'
Autor:
Bronnikov, K. A., Ivashchuk, V. D., Kalinin, M. I., Khruschov, V. V., Kononogov, S. A., Melnikov, V. N.
We discuss the role of fundamental constants and measurement data for the Planck, Avogadro and Boltzmann constants and the elementary electric charge in connection with the planned transition to new definitions of four base SI units (the kilogram, mo
Externí odkaz:
http://arxiv.org/abs/1410.7906
The four SI base units are proposed to be redefined in two stages: first, the kilogram, mole and ampere should be defined, and then the kelvin. To realize the redefinition of a base unit of the SI in terms of fundamental physical constant (FPC), a pr
Externí odkaz:
http://arxiv.org/abs/1206.5902
Publikováno v:
Grav.Cosmol.14:235-240,2008
Electric S-brane solutions with two non-composite electric branes and a set of l scalar fields are considered. The intersection rules for branes correspond to Lie algebras A_2, C_2 and G_2. The solutions contain five factor spaces. One of them, M_0,
Externí odkaz:
http://arxiv.org/abs/0901.0025
Publikováno v:
Grav.Cosmol.15:158-163,2009
Some methods for the determination and the most precise values of constants of an extended Standard Model, which include the gravitation interaction and massive neutrinos, are presented. Accuracies of constants at different energy scales are compared
Externí odkaz:
http://arxiv.org/abs/0807.2211
Publikováno v:
Grav.Cosmol.14:230-234,2008
We consider multidimensional gravity with a Lagrangian containing the Ricci tensor squared and the Kretschmann invariant. In a Kaluza-Klein approach with a single compact extra space of arbitrary dimension, with the aid of a slow-change approximation
Externí odkaz:
http://arxiv.org/abs/0804.0973
Publikováno v:
Grav.Cosmol.12:273-278,2006
Exact solutions with an exponential behaviour of the scale factors are considered in a multidimensional cosmological model describing the dynamics of n+1 Ricci-flat factor spaces M_i in the presence of a one-component perfect fluid. The pressures in
Externí odkaz:
http://arxiv.org/abs/hep-th/0612264
Publikováno v:
Grav.Cosmol.12:173-178,2006
A multidimensional cosmological model describing the dynamics of n+1 Ricci-flat factor-spaces M_i in the presence of a one-component anisotropic fluid is considered. The pressures in all spaces are proportional to the density: p_i = w_i \rho, i = 0,.
Externí odkaz:
http://arxiv.org/abs/gr-qc/0611015
Autor:
Bronnikov, K. A., Kononogov, S. A.
Publikováno v:
Metrologia 43, R1-R9 (2006)
We briefly review the recent experimental results on possible variations of the fine structure constant $\alpha$ on the cosmological time scale and its position dependence. We outline the theoretical grounds for the assumption that $\alpha$ might be
Externí odkaz:
http://arxiv.org/abs/gr-qc/0604002
Publikováno v:
Grav.Cosmol.11:340-344,2005
Expressions for G-dot are considered in a multidimensional model with an Einstein internal space and a multicomponent perfect fluid. In the case of two non-zero curvatures without matter, a mechanism for prediction of small G-dot is suggested. The re
Externí odkaz:
http://arxiv.org/abs/gr-qc/0602108
Publikováno v:
Gen.Rel.Grav. 38 (2006) 1215-1232
We discuss possible variations of the effective gravitational constant with length scale, predicted by most of alternative theories of gravity and unified models of physical interactions. After a brief general exposition, we review in more detail the
Externí odkaz:
http://arxiv.org/abs/gr-qc/0601114