نتایج جستجو برای: anisotropic bianchi type i universe

تعداد نتایج: 2280375  

Journal: :Journal of Cosmology and Astroparticle Physics 2021

Abstract We show that it is possible to realize a cosmological bouncing solution in an anisotropic but homogeneous Bianchi-I background class of non-local, infinite derivative theories gravity. the shear grows slower than general relativity during contraction phase, peaks finite value at bounce point, and then decreases as universe asymptotes towards isotropy homogeneity, ultimately de Sitter. ...

1998
J. Wainwright M. J. Hancock C. Uggla

We study the late time evolution of a class of exact anisotropic cosmological solutions of Einstein’s equations, namely spatially homogeneous cosmologies of Bianchi type VII0 with a perfect fluid source. We show that, in contrast to models of Bianchi type VIIh which are asymptotically self-similar at late times, Bianchi VII0 models undergo a complicated type of self-similarity breaking. This sy...

2009
L. C. Garcia

Magnetic curvature effects in Einstein general relativistic (GR) open Friedmann universe , has been investigated by Barrow and Tsagas (BT) [Phys Rev D 77,(2008)]. They demonstrated that this mechanism induces a magnetic field decay. In this report, one shows that by using the GR-(3+1)-space-time magnetohydrodynamic (MHD) induction equation derived by Marklund and Clarkson (CM) [MNRAS (2004)], t...

Journal: :Research in Astronomy and Astrophysics 2014

Journal: :International Journal of Modern Physics D 2012

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