Search for dissertations about: "two- and three-body systems"
Showing result 1 - 5 of 12 swedish dissertations containing the words two- and three-body systems.
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1. Resonances in three-body systems
Abstract : Three particles interacting via Coulomb forces represents a fundamental problem in quantum mechanics whose approximate solution provides some insight into the more complex analysis associated with few-body problems. We have investigated resonance states composed of three particles interacting via Coulombic and more general potentials in non-relativistic quantum mechanics, using the complex scaling method. READ MORE
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2. Theoretical studies of bound states and resonances in two- and three-body systems
Abstract : .... READ MORE
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3. Three-body Universality Controlled by a Feshbach Resonance
Abstract : The quantum Efimov effect manifests itself in the limit of resonant two-body interactions, where the scattering length diverges. In this scenario, an infinite number of shallow bound trimer states are formed with binding energies that obey a discrete geometric scaling law. READ MORE
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4. Solving the quantum scattering problem for systems of two and three charged particles
Abstract : A rigorous formalism for solving the Coulomb scattering problem is presented in this thesis. The approach is based on splitting the interaction potential into a finite-range part and a long-range tail part. In this representation the scattering problem can be reformulated to one which is suitable for applying exterior complex scaling. READ MORE
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5. Three-body systems in the no-core shell model
Abstract : In this thesis we present the ab initio no-core shell model (NCSM) and we use that framework to study 6He and 6Li computed with a realistic nucleon- nucleon interaction. In particular, we present results for the point-proton radius and the ground-state energy. READ MORE