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From few to many particles: Semiclassical approaches to interacting quantum systems

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Geiger, Benjamin
Date of publication of this fulltext: 07 Aug 2020 07:51

Abstract (English)

While modern computational methods provide a powerful approach to predict the behavior of physical systems, gaining intuition of emergent phenomena requires almost invariably the use of approximation methods. The ideas and methods of semiclassical physics presented in this thesis provide a systematic road to address non-perturbative regimes, where classical information find its way into the ...


Translation of the abstract (German)

Obgleich moderne Rechenverfahren leistungsstarke Verfahren zur Vorhersage in physikalischen Systemen liefern, erfordert der Erwerb tieferer Erkentnisse über emergente Phänomene fast ausnahmslos Näherungsmethoden. Die Ideen und Verfahren der semiklassischen Physik, die in dieser Arbeit präsentiert werden, liefern systematische Zugänge zu nichtperturbativen Bereichen, wobei klassische Information ...


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