Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 8 of 8 for “"Quantum many-body problem"”.
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Holographic superconductor with multiple competing condensates
… novel approach to modeling strongly interacting many-body systems. By reorganizing the quantum many-body problem into an equivalent problem in classical gravity, holography makes it relatively easy, for example, to study linear response and compute transport coefficients. These techniques have …
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cell motility and machine learning
… learning method on sperm classification and quantum many body problem. In sperm classification, we could get around 70\% accuracy with balanced good and poor example. In quantum many body problem, we proposed a deep neural network to calculate the ground-state energies and it shows excellent …
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A systematic computational study of cavity and waveguide quantum electrodynamics
… framework for cavity and waveguide quantum electrodynamics (CQED and WQED, respectively) is presented. By utilizing the classical dyadic Green's function, the quantum many body problem of multiple atoms interacting with an arbitrary lossless electromagnetic environment is reduced to …
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Data-Driven Methods for Low-Energy Nuclear Theory
… describes computational methods for numerical problem solvingwhich have been developed by the field of data science; these are at the intersection of computer science,mathematics, and statistics. When applied to a domain science like nuclear physics, especially with the goalof deepening …
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Excitations in superfluids of atoms and polaritons
… this thesis and justified in the context of the quantum many-body problem. For high occupation numbers and when neglecting quantum fluctuations the quantum field operator simplifies to a semiclassical wave. It turns out that the interparticle interactions can be simplified to a single parameter, …
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Novel Quantum Monte Carlo Approaches for Quantum Liquids
Quantum Monte Carlo methods are a powerful suite of techniques for solving the quantum many-body problem. By using random numbers to stochastically sample quantum properties, QMC methods are capable of studying low-temperature quantum systems well beyond the reach of conventional deterministic …
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On numerical methods in quantum spin systems
… development of numerical methods for studying quantum many- body spin systems. Part I sets the stage for research projects. In chapter 1, I go over major milestones in the field of frustrated magnetism, how it fits into a larger category of condensed matter physics, and recent developments that …