On causal structure of 4D-Einstein–Gauss–Bonnet black hole
Abstract The recently proposed effective equation of motion for the 4D-Einstein–Gauss–Bonnet gravity admits a static black hole solution that has, like the Rissner–Nordström charged black hole, two horizons instead of one for the Schwarzschild black hole. This means that the central singularity is t...
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2020-09-01
|
| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | http://link.springer.com/article/10.1140/epjc/s10052-020-8422-8 |
| _version_ | 1819051442923634688 |
|---|---|
| author | Naresh Dadhich |
| author_facet | Naresh Dadhich |
| author_sort | Naresh Dadhich |
| collection | DOAJ |
| description | Abstract The recently proposed effective equation of motion for the 4D-Einstein–Gauss–Bonnet gravity admits a static black hole solution that has, like the Rissner–Nordström charged black hole, two horizons instead of one for the Schwarzschild black hole. This means that the central singularity is timelike instead of spacelike. It should though be noted that in $$D\ge 5$$ D ≥ 5 , the solution always admits only one horizon like the Schwarzshild solution. In the equation defining the horizon, the rescaled Gauss–Bonnet coupling constant appears as a new ‘gravitational charge’ with a repulsive effect to cause in addition to event horizon a Cauchy horizon. Thus it radically alters the causal structure of the black hole. |
| first_indexed | 2024-12-21T12:04:01Z |
| format | Article |
| id | doaj.art-bacbab8560974836b1e394c279c287cf |
| institution | Directory Open Access Journal |
| issn | 1434-6044 1434-6052 |
| language | English |
| last_indexed | 2024-12-21T12:04:01Z |
| publishDate | 2020-09-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-bacbab8560974836b1e394c279c287cf2022-12-21T19:04:45ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522020-09-018091410.1140/epjc/s10052-020-8422-8On causal structure of 4D-Einstein–Gauss–Bonnet black holeNaresh Dadhich0Inter-University Centre for Astronomy and AstrophysicsAbstract The recently proposed effective equation of motion for the 4D-Einstein–Gauss–Bonnet gravity admits a static black hole solution that has, like the Rissner–Nordström charged black hole, two horizons instead of one for the Schwarzschild black hole. This means that the central singularity is timelike instead of spacelike. It should though be noted that in $$D\ge 5$$ D ≥ 5 , the solution always admits only one horizon like the Schwarzshild solution. In the equation defining the horizon, the rescaled Gauss–Bonnet coupling constant appears as a new ‘gravitational charge’ with a repulsive effect to cause in addition to event horizon a Cauchy horizon. Thus it radically alters the causal structure of the black hole.http://link.springer.com/article/10.1140/epjc/s10052-020-8422-8 |
| spellingShingle | Naresh Dadhich On causal structure of 4D-Einstein–Gauss–Bonnet black hole European Physical Journal C: Particles and Fields |
| title | On causal structure of 4D-Einstein–Gauss–Bonnet black hole |
| title_full | On causal structure of 4D-Einstein–Gauss–Bonnet black hole |
| title_fullStr | On causal structure of 4D-Einstein–Gauss–Bonnet black hole |
| title_full_unstemmed | On causal structure of 4D-Einstein–Gauss–Bonnet black hole |
| title_short | On causal structure of 4D-Einstein–Gauss–Bonnet black hole |
| title_sort | on causal structure of 4d einstein gauss bonnet black hole |
| url | http://link.springer.com/article/10.1140/epjc/s10052-020-8422-8 |
| work_keys_str_mv | AT nareshdadhich oncausalstructureof4deinsteingaussbonnetblackhole |