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<cfTitle cfLangCode='EN' cfTrans='o'>Decay of an intense polariton wave in direct-gap semiconductors and time dynamics of the distribution of scattered polaritons</cfTitle>
<cfKeyw cfLangCode='EN' cfTrans='o'>Polaritons; phonons; Raman spectroscopy</cfKeyw>
<cfAbstr cfLangCode='EN' cfTrans='o'><p>The time evolution of an intense polariton wave has been studied in the framework of a microscopic approach. It has been shown that due to polariton-polariton scattering a significant polariton wave depletion takes place in a comparatively short time interval. The condensate decay occurs in the form of multiple echo signals. Distribution-function dynamics of scattered polaritons have been investigated.</p></cfAbstr>
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