296 citations · 1.1k across the 20 of their papers we have counts for
7 papers · 1 filter
Tolman-Ehrenfest-Klein Law in non-Riemannian geometries
J. A. S. Lima, J. Santos
Heat always flows from hotter to a colder temperature until thermal equilibrium be finally restored in agreement with the usual (zeroth, first and second) laws of thermodynamics. H…
Strong energy condition and the repulsive character of f(R) gravity
Crislane S. Santos, Janilo Santos, Salvatore Capozziello +1
The Raychaudhuri equation enables to examine the whole spacetime structure without specific solutions of Einstein's equations, playing a central role for the understanding of the g…
Classification of Energy Momentum Tensors in Dimensional Space-times: a Review
M. J. Reboucas, J. Santos, A. F. F. Teixeira
Recent developments in string theory suggest that there might exist extra spatial dimensions, which are not small nor compact. The framework of a great number of brane cosmological…
A Note on Segre Types of Second Order Symmetric Tensors in 5-D Brane-world Cosmology
M. J. Reboucas, J. Santos
Recent developments in string theory suggest that there might exist extra spatial dimensions, which are not small nor compact. The framework of most brane cosmological models is th…
On the Algebraic Structure of Second Order Symmetric Tensors in 5-Dimensional Space-times
G. S. Hall, M. J. Reboucas, J. Santos +1
A new approach to the algebraic classification of second order symmetric tensors in 5-dimensional space-times is presented. The possible Segre types for a symmetric two-tensor are…
Segre Types of Symmetric Two-tensors in n-Dimensional Spacetimes
J. Santos, M. J. Reboucas, A. F. F. Teixeira
Three propositions about Jordan matrices are proved and applied to algebraically classify the Ricci tensor in n-dimensional Kaluza-Klein-type spacetimes. We show that the possible…