Search for dissertations about: "semiclassical"
Showing result 1 - 5 of 21 swedish dissertations containing the word semiclassical.
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1. Semiclassical approximation of Dirac resonances using the CAP method
Abstract : .... READ MORE
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2. Semiclassical interpretation of super-shells in trapped fermionic gases
Abstract : We give an analysis, based on periodic orbit theory, of the super-shell structure observed in numerical Hartree-Fock calculations for trapped fermions.... READ MORE
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3. Asymptotic and universal spectral estimates with applications in many-body quantum mechanics and spectral shape optimization
Abstract : This thesis consists of eight papers primarily concerned with the quantitative study of the spectrum of certain differential operators. The majority of the results split into two categories. READ MORE
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4. Semiclassical Analysis of Super-Shell Structure in Trapped Fermi Gases
Abstract : This dissertation investigates the oscillation part of the level density for trapped fermions. Analytical so-called trace formulae have been known for the two theoretically important potentials, the spherical cavity and harmonic oscillator, since more than thirty years. READ MORE
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5. Resonances of Dirac Operators
Abstract : This thesis consists of a summary of four papers dealing with resonances of Dirac operators on Euclidean 3-space. In Paper I we show that the Complex Absorbing Potential (CAP) method is valid in the semiclassical limit for resonances sufficiently close to the real line if the potential is smooth and compactly supported. READ MORE