Abstract
The equations for waves on the surface of an irrotational incompressible fluid are derived in the coordinates of the velocity potential/stream function. The low frequency shallow water approximation for these waves is derived for a varying bottom topography. Most importantly, the conserved norm for the surface waves is derived, important for quantisation of these waves and their use in analogue models for black holes.
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Acknowledgements
This work was supported by The Canadian Institute for Advanced Research (CIfAR) and by The Natural Science and Engineering Research Council of Canada (NSERC) and was completed while the author was a visitor at the Perimeter Institute.
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Unruh, W.G. (2013). Irrotational, Two-Dimensional Surface Waves in Fluids. In: Faccio, D., Belgiorno, F., Cacciatori, S., Gorini, V., Liberati, S., Moschella, U. (eds) Analogue Gravity Phenomenology. Lecture Notes in Physics, vol 870. Springer, Cham. https://doi.org/10.1007/978-3-319-00266-8_4
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DOI: https://doi.org/10.1007/978-3-319-00266-8_4
Publisher Name: Springer, Cham
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