From the Janis–Newman–Winicour Naked Singularities to the Einstein–Maxwell Phantom Wormholes
Abstract
:1. Introduction
2. A Useful Expression for the JNW Metric
3. A New Traversable Wormhole
3.1. The Solution
3.2. Stability Analysis
4. The Exponential Wormhole Spacetime
5. Naked Singularity and Wormhole in de Sitter Universe
6. Naked Singularity and Wormhole in DAU
6.1. Solutions in DAU
6.2. Spacetime Structure of JNW in DAU
6.2.1.
6.2.2.
6.2.3.
6.3. Spacetime Structure of Wormhole in DAU
6.4. Spacetime Structure of Exponential Wormhole in DAU
7. The Scalar Potential for the Quintessence Field
8. The Scalar Potential for the Phantom Field
9. Quintessence Potential Is Exactly the Dilaton Potential
10. Charged Phantom Wormholes and Black Holes
10.1. JNW Naked Singularity Solution Is Unphysical
10.2. Two Double-Horizon Spacetimes Connected by a Timelike Wormhole
10.3. Two Black–White Hole Spacetimes Connected by a Spacelike Wormhole
11. Conclusions and Discussion
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
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Gao, C.; Qiu, J. From the Janis–Newman–Winicour Naked Singularities to the Einstein–Maxwell Phantom Wormholes. Universe 2024, 10, 328. https://doi.org/10.3390/universe10080328
Gao C, Qiu J. From the Janis–Newman–Winicour Naked Singularities to the Einstein–Maxwell Phantom Wormholes. Universe. 2024; 10(8):328. https://doi.org/10.3390/universe10080328
Chicago/Turabian StyleGao, Changjun, and Jianhui Qiu. 2024. "From the Janis–Newman–Winicour Naked Singularities to the Einstein–Maxwell Phantom Wormholes" Universe 10, no. 8: 328. https://doi.org/10.3390/universe10080328