article · Physical review. D/Physical review. D.
This research examines a specific theoretical model known as the Hayward black hole within the framework of four-dimensional scalar-Einstein-Gauss-Bonnet gravity. The study constructs this black hole model and demonstrates that it avoids theoretical instabilities known as ghosts. Unlike standard black holes, a Hayward black hole possesses two horizons and does not contain a central curvature singularity. Because of this absence of a singularity, the model provides a possible resolution to the longstanding theoretical paradox of black hole information loss. Furthermore, the inclusion of the Gauss-Bonnet term functions as a correction derived from string theory. Consequently, the findings suggest that such string-derived corrections could play a significant role in addressing and potentially resolving the black hole information loss problem in fundamental physics.
The black hole information loss paradox is one of the most critical puzzles in modern theoretical physics, sitting at the intersection of general relativity and quantum mechanics. By demonstrating that string-theory corrections can eliminate internal singularities, this research advances fundamental understanding of how gravity operates under extreme conditions, helping theorists reconcile gravitational physics with quantum principles.
The abstract does not indicate an application pathway, as this is purely fundamental theoretical physics research focused on mathematical models of black holes.
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In the framework of scalar-Einstein-Gauss-Bonnet gravity, we construct the Hayward black hole model and discuss the absence of ghosts in this model. Because a Hayward black hole has two horizons but no curvature singularity, it may solve the problem of the information loss that might be generated by black holes. The Gauss-Bonnet term appears as a stringy correction, and therefore, our results might indicate that the stringy correction would solve the information loss problem.
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DOI: 10.1103/physrevd.108.024014
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