2013
DOI: 10.1103/physrevlett.111.113902
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Incoherent Dispersive Shocks in the Spectral Evolution of Random Waves

Abstract: We predict theoretically and numerically the existence of incoherent dispersive shock waves. They manifest themselves as an unstable singular behavior of the spectrum of incoherent waves that evolve in a noninstantaneous nonlinear environment. This phenomenon of "spectral wave breaking" develops in the weakly nonlinear regime of the random wave. We elaborate a general theoretical formulation of these incoherent objects on the basis of a weakly nonlinear statistical approach: a family of singular integro-differ… Show more

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Cited by 47 publications
(61 citation statements)
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“…The leading-order Burgers term in (16) is responsible for the development of a gradient catastrophe, which is subsequently regularized by the nonlinear dispersive term involving the Hilbert operator [7]. This prediction is confirmed by numerical simulations of the NLSE (1) with boundary conditions (2), which have been found in quantitative agreement with the MF-KE (5) and the reduced singular integro-differential MF-KE (16), as shown in Fig.…”
Section: Continuous Response Function: Spectral Shock Wavesupporting
confidence: 75%
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“…The leading-order Burgers term in (16) is responsible for the development of a gradient catastrophe, which is subsequently regularized by the nonlinear dispersive term involving the Hilbert operator [7]. This prediction is confirmed by numerical simulations of the NLSE (1) with boundary conditions (2), which have been found in quantitative agreement with the MF-KE (5) and the reduced singular integro-differential MF-KE (16), as shown in Fig.…”
Section: Continuous Response Function: Spectral Shock Wavesupporting
confidence: 75%
“…4. As discussed in detail in [7], the dispersive shock wave reported here develops in the spectral evolution of the incoherent wave. It is thus of fundamental different nature than the conventional dispersive shocks that develop either in the spatial or the temporal domain from coherent disturbances, which have been experimentally observed in ion-acoustic waves [100], water surface gravity waves [101], and fiber optics [102], and have recently regained great interest in optics [103][104][105][106][107][108][109][110][111][112].…”
Section: Continuous Response Function: Spectral Shock Wavementioning
confidence: 99%
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