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Signatures of energy flux in particle production: a black hole birth cry and death gasp
Stockholm University, Nordic Institute for Theoretical Physics (Nordita).
Number of Authors: 2
2015 (English)In: Journal of High Energy Physics (JHEP), ISSN 1126-6708, E-ISSN 1029-8479, no 7, 145Article in journal (Refereed) Published
Abstract [en]

It is recently argued that if the Hawking radiation process is unitary, then a black hole's mass cannot be monotonically decreasing. We examine the time dependent particle count and negative energy flux in the non-trivial conformal vacuum via the moving mirror approach. A new, exactly unitary solution is presented which emits a characteristic above-thermal positive energy burst, a thermal plateau, and negative energy flux. It is found that the characteristic positive energy flare and thermal plateau is observed in the particle outflow. However, the results of time dependent particle production show no overt indication of negative energy flux. Therefore, a black hole's birth cry is detectable by asymptotic observers via particle count, whereas its death gasp is not.

Place, publisher, year, edition, pages
2015. no 7, 145
Keyword [en]
Black Holes, Classical Theories of Gravity
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:su:diva-120088DOI: 10.1007/JHEP07(2015)145ISI: 000358667800001OAI: oai:DiVA.org:su-120088DiVA: diva2:851639
Available from: 2015-09-07 Created: 2015-09-01 Last updated: 2017-12-04Bibliographically approved

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