| Issue |
EPL
Volume 140, Number 1, October 2022
|
|
|---|---|---|
| Article Number | 19002 | |
| Number of page(s) | 5 | |
| Section | Gravitation, cosmology and astrophysics | |
| DOI | https://doi.org/10.1209/0295-5075/ac969d | |
| Published online | 12 October 2022 | |
Does violation of cosmic no-hair conjecture guarantee the existence of wormhole?
1 Department of Physics, Jadavpur University - Kolkata-700032, India
2 Department of Mathematics, Jadavpur University - Kolkata-700032, India
(a) E-mail: rdhritimalya@gmail.com
(b) E-mail: ayanendudutta@gmail.com
(c) E-mail: schakraborty.math@gmail.com (corresponding author)
Received: 6 June 2022
Accepted: 30 September 2022
The present work investigates the interrelation between the validity (or violation) of the cosmic no-hair conjecture and the existence (or non-existence) of wormholes, both in Einstein’s Gravity and in modified gravity theories. It is found that the existence of wormholes implies a violation of the cosmic no-hair conjecture, and the validity of the cosmic no-hair conjecture implies the non-existence of wormholes but not the reverse way both in Einstein’s Gravity and in modified gravity theories. We will also re-visit the gravitational entropy predictions of the wormhole and show how they are connected.
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