Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2011-08-08
Phys. Rev. D 85, 024021 (2012)
Physics
High Energy Physics
High Energy Physics - Theory
37 pages, 8 figures - new version: remark added in Sec.III.B.3, beginning of Sec.III.E displaced, App.C added together with a
Scientific paper
10.1103/PhysRevD.85.024021
Local and non-local properties of Hawking radiation in the presence of short distance dispersion are computed using connection formulae. The robustness of the spectrum and that of the two-point function are explained by showing that the leading deviations from the relativistic expressions decrease with the inverse of the spatial extension of the near horizon region. This region corresponds to a portion of de Sitter space with a preferred frame. We show that the phases of the Bogoliubov coefficients are relevant for the two-point function in black and white holes, and also for the black hole laser effect. We also present an unexpected relation between the spectra obtained with sub and with superluminal dispersion and we apply our formalism to massive fields. Our predictions are validated by numerical analysis.
Coutant Antonin
Finazzi Stefano
Parentani Renaud
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