Scattering of Co-Current Surface Waves on an Analogue Black Hole

Léo-Paul Euvé, Scott Robertson, Nicolas James, Alessandro Fabbri, and Germain Rousseaux

Phys. Rev. Lett. 124, 141101 – Published 7 April 2020

Abstract

We report on what is to our knowledge the first scattering experiment of surface waves on an accelerating transcritical flow, which in the analogue gravity context is described by an effective spacetime with a black-hole horizon. This spacetime has been probed by an incident co-current wave, which partially scatters into an outgoing countercurrent wave on each side of the horizon. The measured scattering amplitudes are compatible with the predictions of the hydrodynamical theory, where the kinematical description in terms of the effective metric is exact.

Received 5 July 2019
Revised 20 November 2019
Accepted 12 March 2020

DOI:https://doi.org/10.1103/PhysRevLett.124.141101

Physics Subject Headings (PhySH)

Classical black holes Fluids & classical fields in curved spacetime Scattering amplitudes Surface gravity waves

Fluid DynamicsGravitation, Cosmology & Astrophysics

Authors & Affiliations

Léo-Paul Euvé¹, Scott Robertson ², Nicolas James³, Alessandro Fabbri ^4,5,2, and Germain Rousseaux ⁶

¹Laboratoire de Physique et Mécanique des Milieux Hétérogènes (UMR 7636), ESPCI, Université PSL, CNRS, Sorbonne Université, Université Paris Diderot, 10 rue Vauquelin, 75321 Paris Cedex 05, France
²Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
³Laboratoire de Mathématiques et Applications (UMR 7348), CNRS—Université de Poitiers, 11 Boulevard Marie et Pierre Curie—Téléport 2–BP 30179, 86962 Futuroscope Chasseneuil Cedex, France
⁴Departamento de Física Teórica and IFIC, Centro Mixto Universidad de Valencia—CSIC, C. Dr. Moliner 50, 46100 Burjassot, Spain
⁵Centro Fermi—Museo Storico della Fisica e Centro Studi e Ricerche Enrico Fermi, Piazza del Viminale 1, 00184 Roma, Italy
⁶Institut Prime (UPR 3346), CNRS—Université de Poitiers—ISAE ENSMA, 11 Boulevard Marie et Pierre Curie—Téléport 2–BP 30179, 86962 Futuroscope Chasseneuil Cedex, France

Article Text (Subscription Required)

Click to Expand

Supplemental Material (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand

Issue

Vol. 124, Iss. 14 — 10 April 2020

Reuse & Permissions

Access Options

Author publication services for translation and copyediting assistance advertisement

Physical Review Letters