1 citations · 3 across the 4 of their papers we have counts for
6 papers · 1 filter
Reply to "Acausality of Massive Charged Spin 2 Fields"
M. Novello, S. E. Perez Bergliaffa, R. P. Neves
We show that, contrary to the claim in hep-th/0304050, the propagation of a spin-2 field in an electromagnetic background is {\em causal}.
Propagation of perturbations in non-linear spin-2 theories
Santiago E. Perez Bergliaffa
In this communication I analyze the problem of complete exceptionality of wave propagation in a class of spin 2 field theories. I show that, under the imposition of the good weak-f…
On the stress-energy tensor of a rotating wormhole
S. E. Perez Bergliaffa, K. E. Hibberd
We analyze the stress-energy tensor necessary to generate a general stationary and axisymmetric spacetime. The constraints on the geometry arising from considering a perfect fluid…
Inhomogeneous Multidimensional Cosmologies
Santiago E. Perez Bergliaffa
Einstein's equations for a 4+n-dimensional inhomogeneous space-time are presented, and a special family of solutions is exhibited for an arbitrary n. The solutions depend on two ar…
Steps towards an axiomatic pregeometry of space-time
Santiago E. Perez Bergliaffa, Gustavo E. Romero, Hector Vucetich
We present a deductive theory of space-time which is realistic, objective, and relational. It is realistic because it assumes the existence of physical things endowed with concrete…
Inflationary solutions and inhomogeneous Kaluza-Klein cosmology in 4+n dimensions
Santiago E. Perez Bergliaffa
We analyze the existence of inflationary solutions in an inhomogeneous Kaluza-Klein cosmological model in 4+n dimensions. It is shown that the 5-dimensional case is the exception r…