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Observation of noise correlated by the Hawking effect in a water tank

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arxiv 1511.08145 v4 pith:K4YC3MFJ submitted 2015-11-25 physics.flu-dyn gr-qc

classification physics.flu-dyngr-qc
keywords correlationeffectflowhawkingmodesnoisescatteringabove
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

We measured the power spectrum and two-point correlation function for the randomly fluctuating free surface on the downstream side of a stationary flow with a maximum Froude number $F_{\rm max} \approx 0.85$ reached above a localised obstacle. On such a flow the scattering of incident long wavelength modes is analogous to that responsible for black hole radiation (the Hawking effect). Our measurements of the noise show a clear correlation between pairs of modes of opposite energies. We also measure the scattering coefficients by applying the same analysis of correlations to waves produced by a wave maker.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Robustness of analogue Hawking radiation in cavities with moving boundaries

    quant-ph 2025-07 conditional novelty 6.0 of 10

    Thermal Hawking-like radiation in moving-mirror cavities is robust only for selected expanding configurations and low frequencies; all other configurations tested show non-thermal spectra.

  2. Dynamical analog spacetimes from nonlinear perturbations in a topological material

    gr-qc 2025-07 reject novelty 3.0 of 10

    A nonlinear acoustic metric and microkelvin Hawking temperature are claimed for Berry-curvature-modified graphene electron flow, but the derivation is incomplete and the temperature has inconsistent units.

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