TY  - JOUR
AU  - Coutant, A.
AU  - Fabbri, A.
AU  - Parentani, R.
AU  - Balbinot, R.
AU  - Anderson, P. R.
PY  - 2012
DA  - 2012//
TI  - Hawking radiation of massive modes and undulations
T2  - Phys. Rev. D
JO  - Physical Review D
SP  - 064022
EP  - 17pp
VL  - 86
IS  - 6
PB  - Amer Physical Soc
AB  - We compute the analogue Hawking radiation for modes which possess a small wave vector perpendicular to the horizon. For low frequencies, the resulting mass term induces a total reflection. This reflection is accompanied by an extra mode mixing which occurs in the supersonic region, and 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 is 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.
SN  - 1550-7998
UR  - http://arxiv.org/abs/1206.2658
UR  - https://doi.org/10.1103/PhysRevD.86.064022
DO  - 10.1103/PhysRevD.86.064022
LA  - English
N1  - WOS:000308642300005
ID  - Coutant_etal2012
ER  -