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Cardoso, V., Costa, J. L., Natário, J. & Zhong, Z. (2023). Energy extraction from bouncing geometries. Physical Review D. 108 (2)
V. Cardoso et al., "Energy extraction from bouncing geometries", in Physical Review D, vol. 108, no. 2, 2023
@article{cardoso2023_1734949091993, author = "Cardoso, V. and Costa, J. L. and Natário, J. and Zhong, Z.", title = "Energy extraction from bouncing geometries", journal = "Physical Review D", year = "2023", volume = "108", number = "2", doi = "10.1103/PhysRevD.108.024071", url = "https://journals.aps.org/prd/" }
TY - JOUR TI - Energy extraction from bouncing geometries T2 - Physical Review D VL - 108 IS - 2 AU - Cardoso, V. AU - Costa, J. L. AU - Natário, J. AU - Zhong, Z. PY - 2023 SN - 2470-0010 DO - 10.1103/PhysRevD.108.024071 UR - https://journals.aps.org/prd/ AB - 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. ER -