搜索结果: 1-15 共查到“Bianchi type-I”相关记录17条 . 查询时间(0.19 秒)
Knot Universes in Bianchi Type I Cosmology
Knot Universes Bianchi Type I Cosmology General Physics
2012/4/19
We investigate the trefoil and figure-eight knot universes from Bianchi-type I cosmology. In particular, we construct several concrete models describing the knot universes related to the cyclic univer...
On a proof of the collapse conjecture for a diagonal Bianchi type-IX vacuum space-time
collapse conjecture diagonal Bianchi type-IX vacuum space-time General Relativity and Quantum Cosmology
2011/7/27
Abstract: It is given a simple proof of the collapse conjecture for a diagonal Bianchi type-IX vacuum space-time. It is shown that the codimension of the infinity stable attractor, restricted to the a...
A note on proper affine vector fields in Bianchi type IV space-times
Affine vector fields holonomy and decomposability
2010/9/21
Affine vector fields of Bianchi type IV space-times are investigated using holonomy and decomposability, the rank of the 6× 6 Riemann matrix and direct integration technique. From the above study it f...
Inflation of Bianchi type-$\Rmnum{7}_0$ Universe with Dirac Field in Einstein-Cartan theory
Universe Dirac Field Einstein-Cartan theory
2010/12/23
We discuss the Bianchi type-$\Rmnum{7}_0$ cosmology with Dirac field in Einstein-Cartan theory. We obtain the equations of Dirac field and gravitational field in Einstein-Cartan theory. We find a Bian...
String Cosmology in LRS Bianchi Type-II Dusty Universe with Time Decaying Vacuum Energy Density $\Lambda$
LRS Bianchi type II models Nambu String Massive string
2010/12/21
A model of a cloud formed by massive strings is used as a source of LRS Bianchi type II with time decaying vacuum energy density . To construct string cosmological models we have used the energy-mome...
L.R.S. Bianchi type II Stiff Fluid cosmological model with Decaying Vacuum Energy Density $\Lambda$ in general relativity
LRS Bianchi type II models Cosmological constant
2010/12/20
Locally rotationally symmetric (L.R.S.) Bianchi type II stiff fluid cos-mological model is investigated. To get the deterministic model of the universe, we have assumed a condition A = Bm between metr...
Oscillations toward the singularity of LRS Bianchi type IX cosmological models with Vlasov matter
Oscillations singularity of LRS Bianchi type IX cosmological models Vlasov matter
2010/12/20
We analyze the dynamics of a class of cosmological solutions of the Einstein-Vlasov equa-
tions. These equations describe an ensemble of collisionless particles (which represent galaxies or clusters ...
Inflation of Bianchi type-$\Rmnum{7}_0$ Universe with Dirac Field in Einstein-Cartan theory
Einstein-Cartan theory Bianchi type-V II0 inflation Dirac field
2010/12/21
We discuss the Bianchi type-V II0 cosmology with Dirac field in Einstein-Cartan the-ory. We obtain the equations of Dirac field and gravitational field in Einstein-Cartan theory. We find a Bianchi typ...
Bianchi type II,III and V diagonal Einstein metrics re-visited
diagonal Einstein metrics re-visited minkowskian and euclidean
2010/4/2
We present, for both minkowskian and euclidean signatures, short derivations of the diagonal Einstein metrics for Bianchi type II, III and V. For the first two cases we show the integrability of the g...
de Sitter expansion with anisotropic fluid in Bianchi type-I space-time
Bianchi type-I de Sitter expansion cosmological constant anisotropic fluid
2010/3/17
Some features of the Bianchi type-I universes in the presence of a fluid that wields an anisotropic equation of state (EoS) parameter are discussed in the context of general relativity. The models tha...
LRS Bianchi Type -V Cosmology with Heat Flow in Scalar -Tensor Theory
Cosmology Bianchi type models Hubble parameter Deceleration parameter Inflationary model Heat flow
2010/7/8
In this paper we present a spatially homogeneous locally rotationally symmetric (LRS) Bianchi type -V perfect fluid model with heat conduction in scalar tensor theory proposed by Saez and Ballester. T...
Proper homothetic vector fields in Bianchi Type-I Space-Time
proper homothetic vector fields direct integration technique
2009/3/2
A study of proper homothetic vector field in Bianchi type-
1 space-times is given by using direct integration technique. Using the
above mentioned technique we show that the above space-times admit
...
Proper homothetic vector fields in Bianchi Type-I Space-Time
proper homothetic vector fields direct integration technique
2009/1/7
A study of proper homothetic vector field in Bianchi type-
1 space-times is given by using direct integration technique. Using the
above mentioned technique we show that the above space-times admit
...
A note on proper conformal vector ¯elds in Bianchi type I space-times
Direct integration techniques proper conformal vector ¯ elds
2009/1/5
Direct integration technique is used to study the proper con-
formal vector ¯elds in non conformally °at Bianchi type-1 space-times.
Using the above mentioned technique we have shown that a ver...
Tilted Bianchi Type I dust fluid magnetized cosmological model in general relativity
Bianchi type I dust fluid tilted models
2010/4/8
Tilted Bianchi Type I perfect fluid cosmological model in presence of magnetic field is investigated. To get a determinate solution, we assume p = 0 and A = BC, where A, B and C are metric potentials....