Different approaches to the Einstein energy associated with the de Sitter C-space-time

Salti, M
The paper is purposed to elaborate the problem of gravitational energy localization in de Sitter(dS) C-space-time (the C space-time in a background with a cosmological constant Lambda). In this connection, using the energy-momentum definition of Einstein, we find the same energy in both general relativity and tele-parallel gravity.


Different approaches for Moller's energy in the Kasner-type spacetime
Salti, M (World Scientific Pub Co Pte Lt, 2005-09-14)
Considering the Moller energy definition in both Einstein's theory of general relativity and tele-parallel theory of gravity, we find the energy of the universe based on viscous Kasner-type metrics. The energy distribution which includes both the matter and gravitational field is found to be zero in both of these different gravitation theories and this result agrees with previous works of Cooperstock and Israelit et al., Banerjee-Sen, Vargas who investigated the problem of the energy in Friedmann-Robertson-...
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Minimal extension of Einstein’s gravity at the quartic order
Kenar, Esin; Tekin, Bayram; Department of Physics (2018)
We study an extension of Einstein general relativity theory at the quartic order in the curvature. The extended theory has a unique vacuum and a single massless spin-2 excitation about this vacuum, just like general relativity, hence it is called a minimal extension. The extended theory can also be obtained from a particular form of Born-Infeld gravity. We show that the Schwarzschild and Kerr black holes are not exact solutions and the Kretschmann scalar obeys a non-linear wave equation, suggesting that bla...
Citation Formats
M. Salti, “Different approaches to the Einstein energy associated with the de Sitter C-space-time,” ACTA PHYSICA SLOVACA, pp. 563–571, 2005, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/64072.