Please use this identifier to cite or link to this item:
http://hdl.handle.net/10071/29789
Author(s): | Cardoso, V. Costa, J. L. Natário, J. Zhong, Z. |
Date: | 2023 |
Title: | Energy extraction from bouncing geometries |
Journal title: | Physical Review D |
Volume: | 108 |
Number: | 2 |
Reference: | Cardoso, V., Costa, J. L., Natário, J., & Zhong, Z. (2023). Energy extraction from bouncing geometries. Physical Review D, 108(2), 024071. https://dx.doi.org/10.1103/PhysRevD.108.024071 |
ISSN: | 2470-0010 |
DOI (Digital Object Identifier): | 10.1103/PhysRevD.108.024071 |
Abstract: | Quantum gravity phenomenology suggests the interesting possibility that black holes are not eternal. Collapse could be halted by some unknown mechanism, or Hawking radiation might leave behind a regular spacetime. Here we investigate a simple bouncing geometry, with (outer and inner) apparent horizons but no event horizon. We show that the inner horizon blueshifts radiation, which can lead to a gigantic amplification of energy observable from far away regions. Thus, if such phenomena exist in our Universe, then they can power high-energy bursts at late stages in their lives, when the horizons disappear and spacetime bounces back to a flat geometry. |
Peerreviewed: | yes |
Access type: | Open Access |
Appears in Collections: | BRU-RI - Artigos em revistas científicas internacionais com arbitragem científica |
Files in This Item:
File | Size | Format | |
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article_97275.pdf | 636,83 kB | Adobe PDF | View/Open |
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