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     <dc:title xml:lang="fr">Autour de l'équation de Schrödinger-Langevin et du système d'Euler amorti</dc:title>
     <dcterms:alternative xml:lang="en">Around Schrödinger-Langevin equation and isothermal Euler system with damping</dcterms:alternative>
     <dc:subject xml:lang="fr">Equations de Schrödinger logarithmique</dc:subject><dc:subject xml:lang="fr">Mécanique des fluides compressibles</dc:subject><dc:subject xml:lang="fr">Stabilité d’ondes planes</dc:subject><dc:subject xml:lang="fr">Solutions gaussiennes</dc:subject>
     <dc:subject xml:lang="en">Logarithmic Schrödinger equations</dc:subject><dc:subject xml:lang="en">Compressible fluids</dc:subject><dc:subject xml:lang="en">Plane wave stability</dc:subject><dc:subject xml:lang="en">Gaussian solutions</dc:subject><tef:sujetRameau><tef:vedetteRameauNomCommun>
						<tef:elementdEntree autoriteSource="Sudoc" autoriteExterne="027719952">Schrödinger, Équation de</tef:elementdEntree>
					</tef:vedetteRameauNomCommun><tef:vedetteRameauNomCommun>
						<tef:elementdEntree autoriteSource="Sudoc" autoriteExterne="027226085">Fluides, Mécanique des</tef:elementdEntree>
					</tef:vedetteRameauNomCommun><tef:vedetteRameauNomCommun>
						<tef:elementdEntree autoriteSource="Sudoc" autoriteExterne="027355233">Logarithmes</tef:elementdEntree>
					</tef:vedetteRameauNomCommun><tef:vedetteRameauNomCommun>
						<tef:elementdEntree autoriteSource="Sudoc" autoriteExterne="202986403">Ondes planes</tef:elementdEntree>
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     <dcterms:abstract xml:lang="fr">On s’intéresse dans cette thèse à la dynamique de l’équation de Schrödinger-Langevin et son lien avec le système d’Euler-Korteweg isotherme amortie via la transformation de Madelung. L’étude des solutions particulières gaussiennes sur l’espace permets d’expliciter le comportement en temps long des solutions de cette équation. Sur le tore, on montre la stabilité asymptotique des solutions de type onde plane. L’existence de solutions dissipatives au système d’Euler est obtenue par limite visqueuse du système de Navier-Stokes-Korteweg avec amortissement et la construction d’une entropie relative adéquate. On étudie également la dynamique du système d’Euler isotherme amortie.</dcterms:abstract>
     <dcterms:abstract xml:lang="en">This manuscript deals with the dynamics of the Schrödinger-Langevin equation and how it is related with the isothermal Euler-Korteweg system using the Madelung transform. The study of Gaussian solutions on the whole space highlights the long-time behaviour of the solutions of this equation. On the torus, we show the asymptotic stability of plane waves solutions. The global existence of dissipative solutions of the Euler system is obtained through the viscous limit of the damped Navier-Stokes-Korteweg system and the use of a particular relative entropy. We also look at the dynamic of the Euler system with damping.</dcterms:abstract>
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       <tef:nom>Chauleur</tef:nom>
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                        <dc:identifier xsi:type="tef:NNT">2022REN1S010</dc:identifier>
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