Criteria for energy conditions
Abstract
In model building studies, it is important to check the energy conditions for the corresponding energy-momentum tensor determined by the gravitational field equations in order to single out physically reasonable models. In this process, one often encounters a situation where the energy-momentum tensor has one off-diagonal 'space-time' component in the frame with an orthonormal basis in a given spacetime. We derive useful criteria of energy-momentum tensors for their Hawking-Ellis types and the standard energy conditions in such situations. As demonstrations, we apply those criteria to four different systems.
- Publication:
-
Classical and Quantum Gravity
- Pub Date:
- October 2022
- DOI:
- 10.1088/1361-6382/ac8861
- arXiv:
- arXiv:2205.12993
- Bibcode:
- 2022CQGra..39s5002M
- Keywords:
-
- energy conditions;
- Hawking-Ellis classification;
- energy-momentum tensor;
- General Relativity and Quantum Cosmology;
- High Energy Physics - Theory
- E-Print:
- 24 pages, 2 tables, no figure