Relevant bibliographies by topics / Classical and semiclassical methods

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Academic literature on the topic 'Classical and semiclassical methods'

Author: Grafiati
Published: 4 June 2021
Last updated: 18 February 2022

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Dissertations / Theses on the topic "Classical and semiclassical methods"

1

Conrady, Florian. "Semiclassical analysis of loop quantum gravity." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2006. http://dx.doi.org/10.18452/15549.

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In dieser Dissertation untersuchen und entwickeln wir neue Methoden, die dabei helfen sollen eine effektive semiklassische Beschreibung der kanonischen Loop-Quantengravitation und der Spinfoam-Gravitation zu bestimmen. Einer kurzen Einführung in die Loop-Quantengravitation folgen drei Forschungsartikel, die die Resultate der Doktorarbeit präsentieren. Im ersten Artikel behandeln wir das Problem der Zeit und einen neuen Vorschlag zur Implementierung von Eigenzeit durch Randbedingungen an Pfadintegrale: wir untersuchen eine konkrete Realisierung dieses Formalismus für die freie Skalarfeldtheori
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2

Nguyen, Duc Tho. "Classical and semi-classical analysis of magnetic fields in two dimensions." Thesis, Rennes 1, 2019. http://www.theses.fr/2019REN1S045/document.

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Ce manuscrit est consacré à l'étude de la mécanique classique et la mécanique quantique en présence d'un champ magnétique. En mécanique classique, nous utilisons un Hamiltonien pour décrire la dynamique d'une particule chargée dans un domaine soumis à un champ magnétique. Nous nous intéressons ici à deux problèmes classiques de physique : le problème de confinement et le problème de scattering. Dans le cas quantique, nous étudions le problème spectral du laplacien magnétique au niveau semi-classique dans des domaines de dimension deux: sur une variété Riemanienne compacte à bord et dans ℝ ². E
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3

Yang, Shuangbo. "Classical cantori and their semiclassical quantization /." view abstract or download file of text, 1999. http://wwwlib.umi.com/cr/uoregon/fullcit?p9940438.

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Thesis (Ph. D.)--University of Oregon, 1999.<br>Typescript. Includes vita and abstract. Includes bibliographical references (leaves 238-241). Also available for download via the World Wide Web; free to University of Oregon users. Address:http://wwwlib.umi.com/cr/uoregon/fullcit?p9940438.
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4

Ramirez, Daniel Alonso. "Semiclassical quantization and classical chaotic systems." Doctoral thesis, Universite Libre de Bruxelles, 1995. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/212531.

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5

Sauvaget, Thomas. "Classical and semiclassical studies of the hydrogen molecule." Thesis, University of Nottingham, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.438183.

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6

Coveney, P. V. "Semiclassical methods in scattering and spectroscopy." Thesis, University of Oxford, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.354826.

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7

Walton, Andrew Richard. "Semiclassical initial value methods for dynamics." Thesis, University of Nottingham, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.282584.

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8

Brewer, M. L. "Semiclassical methods for the calculation of Franck-Condon spectra." Thesis, University of Oxford, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.267953.

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9

Singh, Pranav. "High accuracy computational methods for the semiclassical Schrödinger equation." Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/274913.

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The computation of Schrödinger equations in the semiclassical regime presents several enduring challenges due to the presence of the small semiclassical parameter. Standard approaches for solving these equations commence with spatial discretisation followed by exponentiation of the discretised Hamiltonian via exponential splittings. In this thesis we follow an alternative strategy${-}$we develop a new technique, called the symmetric Zassenhaus splitting procedure, which involves directly splitting the exponential of the undiscretised Hamiltonian. This technique allows us to design methods tha
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10

Rush, Alexander. "Semiclassical phase-space methods for Hermitian and non-Hermitian quantum dynamics." Thesis, Imperial College London, 2016. http://hdl.handle.net/10044/1/43536.

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In this thesis, we study semiclassical phase-space methods for quantum evolution in Hermitian and non-Hermitian systems. We first present the dynamics of Gaussian wave packets under non-Hermitian Hamiltonians and interpret them as a classical dynamics for complex Hamiltonians. We use these to derive exact dynamics for wave packets in the quadratic Swanson oscillator. We show that in the case of unbroken PT-symmetry there can be periodic divergences in this system and relate this to the fact that any operator mapping the system to a Hermitian counterpart is unbounded. We apply the semiclassical
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