13 citations · 56 across the 15 of their papers we have counts for
15 papers
Revisiting effective Einstein equations on a 3-brane in the presence of torsion
S. Khakshournia, R. Mansouri
The effective Einstein equations on a 3-brane embedded in a 5-dimensional Riemann-Cartan bulk spacetime are revisited. Addressing the shortcomings in the hitherto published junctio…
Revisiting the Israel junction conditions in Einstein-Cartan gravity
S. Khakshournia, R. Mansouri
The Israel junction conditions of a thin shell in the context of Einstein-Cartan gravity are revisited. It is shown that with a choice of the torsion discontinuity taken to be orth…
On the stress-energy tensor of a null shell in Einstein-Cartan gravity
S. Khakshournia, R. Mansouri
The stress-energy tensor of a matter shell whose history coincides with a null hypersurface in the Einstein-Cartan gravity is revisited. It is demonstrated that with a proper choic…
A note on Pathria's model of the universe as a black hole
S. Khakshournia
Pathria has shown that for the certain values of the cosmological constant, a pressureless closed Friedmann-Robertson-Walker universe can be the interior of a Schwarzschild black h…
A Note on the Generalized Friedmann Equations for a Thick Brane
Samad Khakshournia
Within our thick brane approach previously used to obtain the cosmological evolution equations on a thick brane embedded in a five-dimensional Schwarzschild Anti-de Sitter spacetim…
Matching LTB and FRW spacetimes through a null hypersurface
S. Khakshournia, R. Mansouri
Matching of a LTB metric representing dust matter to a background FRW universe across a null hypersurface is studied. In general, an unrestricted matching is possible only if the b…