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Article Dans Une Revue Physical Review D Année : 2012

Hawking radiation of massive modes and undulations

Résumé

We compute the analogue Hawking radiation for modes which posses a small wave vector perpendicular to the horizon. For low frequencies, the resulting mass term induces a total reflection. This generates an extra mode mixing that occurs in the supersonic region, which cancels out the infrared divergence of the near horizon spectrum. As a result, the amplitude of the undulation (0-frequency wave with macroscopic amplitude) emitted in white hole flows now saturates at the linear level, unlike what was recently found in the massless case. In addition, we point out that the mass introduces a new type of undulation which is produced in black hole flows, and which is well described in the hydrodynamical regime.

Dates et versions

hal-00708290 , version 1 (14-06-2012)

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Antonin Coutant, Alessandro Fabbri, Renaud Parentani, Roberto Balbinot, Paul Anderson. Hawking radiation of massive modes and undulations. Physical Review D, 2012, 86, pp.064022. ⟨10.1103/PhysRevD.86.064022⟩. ⟨hal-00708290⟩
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