On the stress-energy tensor of a null shell in Einstein-Cartan gravity

Abstract

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 choice for the torsion discontinuity taken to be orthogonal to the null hypersurface and consistent with the antisymmetric property of torsion tensor, the modified expression for the asymmetric stress-energy tensor is automatically tangent to the hypersurface. The main differences with respect to a previous work are addressed

7 pages

References in corpus (1)

• A reformulation of the Barrabes-Israel null-shell formalism

Cited by in corpus (2)

• Revisiting the Israel junction conditions in Einstein-Cartan gravity
• Kinematic reconstruction of torsion as dark energy in Friedmann cosmology