1. Existence of non-exotic traversable wormholes in squared trace extended gravity theory.
- Author
-
Tripathy, S.K., Nayak, D., Mishra, B., Behera, D., and Sahu, S.K.
- Subjects
- *
EINSTEIN-Hilbert action , *GRAVITY , *EQUATIONS of state , *POWER law (Mathematics) - Abstract
An extended gravity theory is used to explore the possibility of non-exotic matter traversable wormholes. In the extended gravity theory, additional terms linear and quadratic in the trace of the energy momentum tensor are considered in the Einstein-Hilbert action. Obviously, such an addition leads to violation of the energy-momentum tensor. The model parameters are constrained from the structure of the field equations. Non-exotic matter wormholes tend to satisfy the null energy conditions. We use two different traversable wormhole geometries namely an exponential and a power law shape functions to model the wormholes. From a detailed analysis of the energy conditions, it is found that, the existence of non-exotic matter traversable wormholes is not obvious in the model considered and its possibility may depend on the choice of the wormhole geometry. Also, we found that, non-exotic wormholes are possible within the given squared trace extended gravity theory for a narrow range of the chosen equation of state parameter. • Possibility of non-exotic matter traversable wormholes. • Non-exotic matter wormholes tend to satisfy the null energy conditions. • Non-exotic wormholes are possible for a narrow range of equation of state parameter. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF