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arXiv · 1812.10953

Cosmological perturbations in gravitational energy-momentum complex

Habib Abedi·Amir M. Abbassi·Salvatore Capozziello
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Abstract

Starting from the energy-momentum of matter and gravitational field in the framework of General Relativity and Teleparallel Gravity, we obtain the energy-momentum complex in flat FRW spacetime. We show that the complex vanishes at background level considering the various prescriptions, that is the Einstein, Møller, Landau-Lifshitz and Bergmann ones. On the other hand, at level of linear cosmological perturbations, the energy-momentum complex is different from zero and coincides in the various prescriptions. Finally, we evaluate the gravitational energy for different cosmological epochs governed by non-relativistic matter, radiation, inflationary scalar fields and cosmological constant.

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Habib Abedi, Amir M. Abbassi, Salvatore Capozziello. 2018-12-28. Cosmological perturbations in gravitational energy-momentum complex. https://doi.org/10.1016/j.aop.2019.03.002

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