Zobrazeno 1 - 6
of 6
pro vyhledávání: '"Anusua Roy"'
Publikováno v:
2022 25th Euromicro Conference on Digital System Design (DSD).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::95ad438dd78455b1f95a49ac999c3c5a
https://doi.org/10.1109/dsd57027.2022.00022
https://doi.org/10.1109/dsd57027.2022.00022
Autor:
Subenoy Chakraborty, Anusua Roy
Publikováno v:
Astrophysics and Space Science. 313:389-392
In this paper we have considered axially symmetric Bianchi-I, Kantowski Sachs and Bianchi-III space-time models with bulk viscosity, where the gravitational constant G and the cosmological term Λ vary with time. In Einstein equations this variation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::229fe5658c4f8ebcf389fc232d0377ab
https://doi.org/10.1007/s10509-007-9708-0
https://doi.org/10.1007/s10509-007-9708-0
Autor:
Anusua Roy, Subenoy Chakraborty
Publikováno v:
International Journal of Modern Physics D. :645-650
We have studied string cosmology in higher-dimensional cylindrically symmetric model which is in the Kaluza–Klein spacetime. Some of the solutions show a nonsingularity of the spacetime.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6c988ac7cffab7190b7636c8fbe21eea
https://doi.org/10.1142/s0218271899000444
https://doi.org/10.1142/s0218271899000444
Autor:
Subenoy Chakraborty, Anusua Roy
Publikováno v:
Pramana. 51:369-376
String-dust cosmology in an inhomogeneous cylindrically symmetric model is considered. Solutions are obtained only for geometric string with the separability assumption for metric coefficients.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c56a85b00ecf6e93322821a2ec4d2ec0
https://doi.org/10.1007/bf02828930
https://doi.org/10.1007/bf02828930
Autor:
Subenoy Chakraborty, Anusua Roy
Publikováno v:
Astrophysics and Space Science. 262:245-248
We have studied string-dust cosmological model in a stationary cylindrically symmetric space-time. A one parameter family of solutions is obtained for the field equations of the system.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5fbb51c1abb04df5b65455049bb2ce60
https://doi.org/10.1023/a:1001891810882
https://doi.org/10.1023/a:1001891810882
Autor:
Subenoy Chakraborty, Anusua Roy
Publikováno v:
Astrophysics and Space Science. 253:205-209
In this work, Bianchi type II cosmological models have been discussed treating G and Λ as non-constant scalars. Some solutions are obtained assuming an equation of state for the perfect fluid model and a power law form between the scale factors. An
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc85e1fa325e7c023c8738dd0540e79d
https://doi.org/10.1023/a:1000628119329
https://doi.org/10.1023/a:1000628119329