Anisotropic Spectra of Acoustic Turbulence

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Abstract
We found universal anizopropic spectra of acoustic turbulence with the linear dispersion law \bbox{$\omega (k) =ck$} within the framework of generalized kinetic equation which takes into account the finite time of three-wave interactions. This anisotropic spectra can assume both scale-invariant and non scale-invariant form. The implications for the evolution of the acoustic turbulence with non-isotropic pumping are discussed. The main result of the article is that the spectra of acoustic turbulence tend to become more isotropic.

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