%0 Journal Article
%T Gray-body factor and infrared divergences in 1D BEC acoustic black holes
%A Anderson, P. R.
%A Balbinot, R.
%A Fabbri, A.
%A Parentani, R.
%J Physical Review D
%D 2014
%V 90
%N 10
%I Amer Physical Soc
%@ 1550-7998
%G English
%F Anderson_etal2014
%O WOS:000348186700004
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=2079), last updated on Thu, 12 Feb 2015 10:47:37 +0000
%X It is shown that the gray-body factor for a one-dimensional elongated Bose-Einstein condensate (BEC) acoustic black hole with one horizon does not vanish in the low-frequency (omega -> 0) limit. This implies that the analog Hawking radiation is dominated by the emission of an infinite number (1/omega) of soft phonons in contrast with the case of a Schwarzschild black hole where the gray-body factor vanishes as omega -> 0 and the spectrum is not dominated by low-energy particles. The infrared behaviors of certain correlation functions are also discussed.
%R 10.1103/PhysRevD.90.104044
%U http://arxiv.org/abs/1404.3224
%U https://doi.org/10.1103/PhysRevD.90.104044
%P 104044-6pp