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Quantum singularities in the BTZ spacetime
(Amer Physical SocCollege PkEUA, 2008)
Cartan geometry of spacetimes with a nonconstant cosmological function Lambda
(Amer Physical Soc, 2014-10-23)
We present the geometry of spacetimes that are tangentially approximated by de Sitter spaces whose cosmological constants vary over spacetime. Cartan geometry provides one with the tools to describe manifolds that reduce ...
Cartan geometry of spacetimes with a nonconstant cosmological function Λ
(2014-10-23)
We present the geometry of spacetimes that are tangentially approximated by de Sitter spaces whose cosmological constants vary over spacetime. Cartan geometry provides one with the tools to describe manifolds that reduce ...
On the spacetime connecting two aeons in conformal cyclic cosmology
(Springer, 2015-12-01)
As quotient spaces, Minkowski and de Sitter are fundamental, non-gravitational spacetimes for the construction of physical theories. When general relativity is constructed on a de Sitter spacetime, the usual Riemannian ...
Cartan geometry of spacetimes with a nonconstant cosmological function Lambda
(Amer Physical Soc, 2015)
Cartan geometry of spacetimes with a nonconstant cosmological function Lambda
(Amer Physical Soc, 2015)
AdS geometry, projective embedded coordinates and associated isometry groups
(Springer/plenum PublishersNew YorkEUA, 2006)
Spacetime algebraic skeleton
(Iop Publishing Ltd, 2003-01-01)
The cosmological constant is shown to have an algebraic meaning: it is essentially an eigenvalue of a Casimir invariant of the Lorentz group acting on the spaces tangent to every spacetime. This is found in the context of ...