Possible observational windows for quantum effects from black holes
Abstract
Quantum information transfer necessary to reconcile black hole evaporation with quantum mechanics, while approximately preserving regular near-horizon geometry, can be simply parameterized in terms of couplings of the black hole internal state to quantum fields of the black hole atmosphere. The necessity of transferring sufficient information for unitarization sets the strengths of these couplings. Such couplings via the stress tensor offer apparently significant advantages, and behave like quantum fluctuations of the effective metric near the horizon. At the requisite strength, these fluctuations, while soft (low energy/momentum), have significant magnitude, and so can deflect near-horizon geodesics that span distances of order the black hole radius. Thus, the presence of such couplings can result in effects that could be detected or constrained by observation: disruption of near-horizon accretion flows, scintillation of light passing close to the black hole, and alteration of gravitational wave emission from inspirals. Finally, these effects could in particular distort features of Sgr A* expected to be observed, e.g., by the Event Horizon Telescope, such as the black hole shadow and photon ring.
- Authors:
-
- Univ. of California, Santa Barbara, CA (United States)
- Publication Date:
- Research Org.:
- Univ. of California, Santa Barbara, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP); Foundation Questions Institute
- OSTI Identifier:
- 1602241
- Alternate Identifier(s):
- OSTI ID: 1180471
- Grant/Contract Number:
- SC0011702; FG02-91ER40618; FQXi-RFP3-1330
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review. D, Particles, Fields, Gravitation and Cosmology
- Additional Journal Information:
- Journal Volume: 90; Journal Issue: 12; Journal ID: ISSN 1550-7998
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 79 ASTRONOMY AND ASTROPHYSICS
Citation Formats
Giddings, Steven B. Possible observational windows for quantum effects from black holes. United States: N. p., 2014.
Web. doi:10.1103/PhysRevD.90.124033.
Giddings, Steven B. Possible observational windows for quantum effects from black holes. United States. https://doi.org/10.1103/PhysRevD.90.124033
Giddings, Steven B. Tue .
"Possible observational windows for quantum effects from black holes". United States. https://doi.org/10.1103/PhysRevD.90.124033. https://www.osti.gov/servlets/purl/1602241.
@article{osti_1602241,
title = {Possible observational windows for quantum effects from black holes},
author = {Giddings, Steven B.},
abstractNote = {Quantum information transfer necessary to reconcile black hole evaporation with quantum mechanics, while approximately preserving regular near-horizon geometry, can be simply parameterized in terms of couplings of the black hole internal state to quantum fields of the black hole atmosphere. The necessity of transferring sufficient information for unitarization sets the strengths of these couplings. Such couplings via the stress tensor offer apparently significant advantages, and behave like quantum fluctuations of the effective metric near the horizon. At the requisite strength, these fluctuations, while soft (low energy/momentum), have significant magnitude, and so can deflect near-horizon geodesics that span distances of order the black hole radius. Thus, the presence of such couplings can result in effects that could be detected or constrained by observation: disruption of near-horizon accretion flows, scintillation of light passing close to the black hole, and alteration of gravitational wave emission from inspirals. Finally, these effects could in particular distort features of Sgr A* expected to be observed, e.g., by the Event Horizon Telescope, such as the black hole shadow and photon ring.},
doi = {10.1103/PhysRevD.90.124033},
journal = {Physical Review. D, Particles, Fields, Gravitation and Cosmology},
number = 12,
volume = 90,
place = {United States},
year = {Tue Dec 09 00:00:00 EST 2014},
month = {Tue Dec 09 00:00:00 EST 2014}
}
Web of Science
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