Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Gulgasyl Nugmanova"'
Autor:
Ratbay Myrzakulov, Gulgasyl Nugmanova, Petr Tsyba, Kuralay Yesmakhanova, Kazuharu Bamba, Ujjal Debnath
Publikováno v:
Entropy, Vol 14, Iss 11, Pp 2351-2374 (2012)
We demonstrate two periodic or quasi-periodic generalizations of the Chaplygin gas (CG) type models to explain the origins of dark energy as well as dark matter by using the Weierstrass ξ(t), σ(t) and ζ (t) functions with two periods being infinit
Externí odkaz:
https://doaj.org/article/b1b5c89bfe5d4e6881e961e315216bc7
Publikováno v:
Ufimskii Matematicheskii Zhurnal. 12:50-55
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::92ca4bedb538c3acb66a6225fe875abb
https://doi.org/10.13108/2020-12-2-50
https://doi.org/10.13108/2020-12-2-50
Autor:
Gulgasyl Nugmanova, Zh. Sagidullayeva
Publikováno v:
BULLETIN OF THE KARAGANDA UNIVERSITY-MATHEMATICS. 86:91-96
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b4ee39a18edafa36c7063773c490f41
https://doi.org/10.31489/2017m2/91-96
https://doi.org/10.31489/2017m2/91-96
Publikováno v:
RENEWABLE ENERGY SOURCES AND TECHNOLOGIES.
In this work, we present the dispersionless limit of the Heisenberg ferromagnet equation with self-consistent potential. The results can be used to describe spin waves in magnets and ferromagnets in the absence of dispersive properties of the medium.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3b6b3cc5e783a331be1715f832a9a789
https://doi.org/10.1063/1.5127494
https://doi.org/10.1063/1.5127494
Autor:
Gulgasyl Nugmanova, Kuralay Yesmakhanova, Ratbay Myrzakulov, M. Lakshmanan, G. K. Mamyrbekova
Publikováno v:
Physics Letters A. 378:2118-2123
Motion of curves and surfaces in $\R^3$ lead to nonlinear evolution equations which are often integrable. They are also intimately connected to the dynamics of spin chains in the continuum limit and integrable soliton systems through geometric and ga
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1405ac6f63104726d71a33ed074f29dd
https://doi.org/10.1016/j.physleta.2014.05.010
https://doi.org/10.1016/j.physleta.2014.05.010
Publikováno v:
Journal of Physics: Conference Series. 1416:012029
In this paper, we present integrable surfaces associated with generalized LandauLifshitz equation with self-consistent potential. We obtained the rst and second fundamental forms. The rst fundamental form allow us to calculate the curvature and metri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4d842d9dd176346197cc2a72b651d29c
https://doi.org/10.1088/1742-6596/1416/1/012029
https://doi.org/10.1088/1742-6596/1416/1/012029
Autor:
Kuralay Yesmakhanova, Nurgissa Myrzakulov, Ratbay Myrzakulov, Koblandy Yerzhanov, Gulgasyl Nugmanova, Petr Tsyba
Publikováno v:
Astrophysics and Space Science. 341:681-688
In the present work we analyze the g-essence model for the particular Lagrangian: \(L=R+2[\alpha X^{n}+\epsilon Y-V(\psi,\bar{\psi})]\). The g-essence models were proposed recently as an alternative and a generalization of the scalar k-essence models
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::84c5971ce3e9cb71a4fcbebf08149e86
https://doi.org/10.1007/s10509-012-1104-8
https://doi.org/10.1007/s10509-012-1104-8
Publikováno v:
International Journal of Theoretical Physics. 51:1204-1210
The Einstein equation for the Friedmann-Robertson-Walker metric plays a fundamental role in cosmology. The direct search of the exact solutions of the Einstein equation even in this simple metric case is sometime a hard job. Therefore, it is useful t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bebbbe132aa6f760ea131f2160d9f3d3
https://doi.org/10.1007/s10773-011-0996-3
https://doi.org/10.1007/s10773-011-0996-3
Publikováno v:
Journal of Physics: Conference Series. 804:012035
In this work an integrable generalization of the Landau-Lifshitz equation with self-consistent vector potential is studied. It was established that self-consistence of spin vector and potential happen by the relation between solutions the potential a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::037414d0df183663aa50ac217510d1ef
https://doi.org/10.1088/1742-6596/804/1/012035
https://doi.org/10.1088/1742-6596/804/1/012035
Publikováno v:
Theoretical and Mathematical Physics. 118:347-356
The connection between the differential geometry of curves and (2+1)-dimensional integrable systems is established. The Zakharov equation, the modified Veselov-Novikov equation, the modified Kortewegde Vries equation, etc., are equivalent in the Laks
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::01c7b7a3ef7e81e4910f17ada9f81c3c
https://doi.org/10.1007/bf02557332
https://doi.org/10.1007/bf02557332