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Self-amplifying Hawking radiation and its background: a numerical study by Steinhauer, Jeff; de Nova, Juan Ramón Muñoz is a scholarly article available to read on EtoBox.

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We numerically study an analogue black hole with two horizons with similar parameters to a recent experiment. We find that the Hawking radiation exists on a background which contains a density oscillation, a zero-frequency ripple. The Hawking radiation evolves from spontaneous to self-amplifying, while the background ripple grows steadily with no qualitative change. It is seen that the self-amplifying Hawking radiation has a non-zero frequency. The background ripple appears even before the inner horizon is created, in contrast to predictions. This work is in agreement with the recent observation of self-amplifying Hawking radiation, and explains some of the features seen. In contrast to recent works, our study differentiates between the Hawking radiation observed, and the evolution of the background.

Author

Steinhauer, Jeff; de Nova, Juan Ramón Muñoz

Published

2016

Language

EN