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<dc:title xml:lang="en">Strongly correlated systems of bosons and fermions : a diagrammatic, variational and path integral Monte Carlo study</dc:title>
<dcterms:alternative xml:lang="fr">Systèmes fortement corrélés de bosons et fermions : une étude Monte Carlo diagrammatique, variationnelle et intégrale de Chemin</dcterms:alternative>
<dc:subject xml:lang="fr">Systèmes à N corps quantiques</dc:subject>
<dc:subject xml:lang="fr">Physique de la matière condensée</dc:subject>
<dc:subject xml:lang="fr">Atomes froids</dc:subject>
<dc:subject xml:lang="fr">Méthodes numériques</dc:subject>
<dc:subject xml:lang="en">Quantum many-body systems</dc:subject>
<dc:subject xml:lang="en">Condensed matter physics</dc:subject>
<dc:subject xml:lang="en">Cold atoms</dc:subject>
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<tef:elementdEntree autoriteExterne="028904109" autoriteSource="Sudoc">Systèmes non linéaires</tef:elementdEntree>
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<tef:elementdEntree autoriteExterne="027835049" autoriteSource="Sudoc">Statistique quantique</tef:elementdEntree>
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<tef:elementdEntree autoriteExterne="032326777" autoriteSource="Sudoc">Supraconductivité à hautes températures</tef:elementdEntree>
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<dcterms:abstract xml:lang="fr">Mon travail de thèse se concentre sur l'étude, à l'aide de techniques numériques, de systèmes de fermions et bosons fortement corrélés. J'étudie Hamiltoniens de bosons sur réseau avec interactions à portée étendue, avant un intérêt pour expériences concernant atomes en états Rydberg-dressed, par moyen de simulations Path Integral Monte Carlo. Mon résultat principal est la démonstration d'un état de superverre en absence de sources de frustration dans le système. J'étudie également la modèle t-J fermionique avec deux trous par moyen de simulations Variational Monte Carlo avec l’ansatz Entangled Plaquette States (EPS). Mon étude est fondamental en la perspective d'appliquer l'ansatz EPS à autres systèmes fermioniques, d’intérêt pour la supraconductivité à haute temperature, dont le comportement n'a pas encore été déterminé. Finalement, je présente mon travail sur une implémentation de l'algorithme Diagrammatic Monte Carlo.</dcterms:abstract>
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