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- W4366388232 abstract "We study several different aspects of the energy equipartition principle for water waves. We prove a virial identity that implies that the potential energy is equal, on average, to a modified version of the kinetic energy. This is an exact identity for the complete nonlinear water wave problem, which is valid for arbitrary solutions. As an application, we obtain non-perturbative results justifying the formation of bubbles for the free-surface Rayleigh-Taylor instability, for any non-zero initial data. We also derive exact virial identities involving higher order energies. The fact that such exact identities are valid for nonlinear equations is new and general: as explained in a companion paper, similar identities can be derived for many other nonlinear equations. We illustrate this result by an explicit computation for standing waves. As side results, we prove trace inequalities for harmonic functions in Lipschitz domains which are optimal with respect to the dependence in the Lipschitz norm of the graph." @default.
- W4366388232 created "2023-04-21" @default.
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- W4366388232 date "2023-04-16" @default.
- W4366388232 modified "2023-10-01" @default.
- W4366388232 title "Virial theorems and equipartition of energy for water-waves" @default.
- W4366388232 doi "https://doi.org/10.48550/arxiv.2304.07872" @default.
- W4366388232 hasPublicationYear "2023" @default.
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