Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Vladimir A. Ivashchuk"'
Publikováno v:
Symmetry, Vol 15, Iss 6, p 1199 (2023)
This review dealt with generalized Melvin solutions for simple finite-dimensional Lie algebras. Each solution appears in a model which includes a metric and n scalar fields coupled to n Abelian 2-forms with dilatonic coupling vectors determined by si
Externí odkaz:
https://doaj.org/article/ddcb6671a4ed449690b6e79c4b932b5d
Publikováno v:
Symmetry, Vol 14, Iss 10, p 2145 (2022)
We consider generalized Melvin-like solutions corresponding to Lie algebras of rank 5 (A5, B5, C5, D5). The solutions take place in a D-dimensional gravitational model with five Abelian two-forms and five scalar fields. They are governed by five modu
Externí odkaz:
https://doaj.org/article/5afbee64d88d4e248886b1a7ed3072b1
Publikováno v:
Symmetry, Vol 14, Iss 7, p 1296 (2022)
We study a D-dimensional Einstein–Gauss–Bonnet model which includes the Gauss–Bonnet term, the cosmological term Λ and two non-zero constants: α1 and α2. Under imposing the metric to be diagonal one, we find cosmological type solutions with
Externí odkaz:
https://doaj.org/article/df0a373deeab429e9883d760b42a6c8c
Publikováno v:
Izmeritel`naya Tekhnika. :3-8
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f4cef4ec6964d0b985e2180393b8a837
https://doi.org/10.32446/0368-1025it.2022-3-3-8
https://doi.org/10.32446/0368-1025it.2022-3-3-8
Autor:
Vladimir D. Ivashchuk
Publikováno v:
Symmetry, Vol 9, Iss 8, p 155 (2017)
The review is devoted to exact solutions with hidden symmetries arising in a multidimensional gravitational model containing scalar fields and antisymmetric forms. These solutions are defined on a manifold of the form M = M0 x M1 x . . . x Mn , where
Externí odkaz:
https://doaj.org/article/58252a24ccea40bfb85c618f34d4a8ea
Publikováno v:
Symmetry, Integrability and Geometry: Methods and Applications, Vol 5, p 070 (2009)
A multidimensional gravitational model containing scalar fields and antisymmetric forms is considered. The manifold is chosen in the form M = M_0 × M_1 × ... × M_n, where M_i are Einstein spaces (i ≥ 1). The sigma-model approach and exact soluti
Externí odkaz:
https://doaj.org/article/977def3371d64f928af1a5a1612e6dd5
Autor:
Vitaliy P. Prokhorenko, Alexander N. Lishchenko, Elena S. Boryssenko, Vladimir A. Ivashchuk, Anatoliy Boryssenko
Publikováno v:
Ultra-Wideband, Short-Pulse Electromagnetics 5 ISBN: 0306473380
Some of the principal components of the presented radar system have been manufactured and are under testing now. Firstly the radar with two-receiver array for co-polar and cross-polar operation has been examined. The most resent experiments involve f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7657fd2c5f46773d40d33ee35856b6eb
https://doi.org/10.1007/0-306-47948-6_24
https://doi.org/10.1007/0-306-47948-6_24
