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- Publisher Website: 10.1103/PhysRevD.94.084035
- Scopus: eid_2-s2.0-84992690611
- WOS: WOS:000386175100006
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Article: Planck star tunneling time: An astrophysically relevant observable from background-free quantum gravity
Title | Planck star tunneling time: An astrophysically relevant observable from background-free quantum gravity |
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Authors | |
Issue Date | 2016 |
Citation | Physical Review D, 2016, v. 94, n. 8, article no. 084035 How to Cite? |
Abstract | © 2016 American Physical Society. A gravitationally collapsed object can bounce out from its horizon via a tunnelling process that violates the classical equations in a finite region. Since tunnelling is a nonperturbative phenomenon, it cannot be described in terms of quantum fluctuations around a classical solution, and a background-free formulation of quantum gravity is needed to analyze it. Here, we use loop quantum gravity to compute the amplitude for this process, in a first approximation. The amplitude determines the tunnelling time as a function of the mass. This is the key information to evaluate the relevance of this process for the interpretation of fast radio bursts or high-energy cosmic rays. The calculation offers a template and a concrete example of how a background-free quantum theory of gravity can be used to compute a realistic observable quantity. |
Persistent Identifier | http://hdl.handle.net/10722/285779 |
ISSN | 2023 Impact Factor: 4.6 2023 SCImago Journal Rankings: 1.587 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Christodoulou, Marios | - |
dc.contributor.author | Rovelli, Carlo | - |
dc.contributor.author | Speziale, Simone | - |
dc.contributor.author | Vilensky, Ilya | - |
dc.date.accessioned | 2020-08-18T04:56:37Z | - |
dc.date.available | 2020-08-18T04:56:37Z | - |
dc.date.issued | 2016 | - |
dc.identifier.citation | Physical Review D, 2016, v. 94, n. 8, article no. 084035 | - |
dc.identifier.issn | 2470-0010 | - |
dc.identifier.uri | http://hdl.handle.net/10722/285779 | - |
dc.description.abstract | © 2016 American Physical Society. A gravitationally collapsed object can bounce out from its horizon via a tunnelling process that violates the classical equations in a finite region. Since tunnelling is a nonperturbative phenomenon, it cannot be described in terms of quantum fluctuations around a classical solution, and a background-free formulation of quantum gravity is needed to analyze it. Here, we use loop quantum gravity to compute the amplitude for this process, in a first approximation. The amplitude determines the tunnelling time as a function of the mass. This is the key information to evaluate the relevance of this process for the interpretation of fast radio bursts or high-energy cosmic rays. The calculation offers a template and a concrete example of how a background-free quantum theory of gravity can be used to compute a realistic observable quantity. | - |
dc.language | eng | - |
dc.relation.ispartof | Physical Review D | - |
dc.title | Planck star tunneling time: An astrophysically relevant observable from background-free quantum gravity | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1103/PhysRevD.94.084035 | - |
dc.identifier.scopus | eid_2-s2.0-84992690611 | - |
dc.identifier.volume | 94 | - |
dc.identifier.issue | 8 | - |
dc.identifier.spage | article no. 084035 | - |
dc.identifier.epage | article no. 084035 | - |
dc.identifier.eissn | 2470-0029 | - |
dc.identifier.isi | WOS:000386175100006 | - |
dc.identifier.issnl | 2470-0010 | - |