On the Origin of the Outgoing Black Hole Modes

Details On the Origin of the Outgoing Black Hole Modes On the Origin of the Outgoing Black Hole Modes

1996-01-12

arxiv.org/abs/hep-th/9601064v2

Phys.Rev. D53 (1996) 7082-7088

Physics

High Energy Physics

High Energy Physics - Theory

12 pages, plain latex, 2 figures included using psfig; Analogy to ``Andreev reflection" in superfluid systems noted, reference

Scientific paper

10.1103/PhysRevD.53.7082

The question of how to account for the outgoing black hole modes without drawing upon a transplanckian reservoir at the horizon is addressed. It is argued that the outgoing modes must arise via conversion from ingoing modes. It is further argued that the back-reaction must be included to avoid the conclusion that particle creation cannot occur in a strictly stationary background. The process of ``mode conversion" is known in plasma physics by this name and in condensed matter physics as ``Andreev reflection" or ``branch conversion". It is illustrated here in a linear Lorentz non-invariant model introduced by Unruh. The role of interactions and a physical short distance cutoff is then examined in the sonic black hole formed with Helium-II.

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