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Four-Body Treatment of the Hydrogen-Antihydrogen System
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström. (Antimatter)
2012 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

This thesis presents a nonadiabatic (4-body) description of the hydrogen-antihydrogen system at a nonrelativistic level. The properties of the system, the rearrangement processes and the possible existence of resonance states are investigated by using a variational method for coupled arrangement channels, the Gaussian Expansion Method, and the stabilization method.

The 4-body basis set is optimized by means of prediagonalization of 2-body fragments. In paper I, a mass-scaling procedure of the Born-Oppenheimer potential is introduced for the description of the relative motion between hydrogen and antihydrogen. The nonadiabaticity of the system is investigated in paper II.

Place, publisher, year, edition, pages
Uppsala: Uppsala universitet, 2012. , 104 p.
Keyword [en]
Antimatter, antihydrogen, four-body system, Adiabatic approximation, Born-Oppenheimer, elastic scattering, stabilization method, resonance states, coupled arrangement channels, coupled rearrangement channels, Gaussian Expansion Method
Keyword [sv]
Antimateria, antiväte, fyrkroppars system, adiabatisk approximation, stabilisationsmetoden, resonanstillstånd, spridningstillstånd, kopplade arrangemangskanaler
National Category
Atom and Molecular Physics and Optics Atom and Molecular Physics and Optics
Research subject
Quantum Chemistry
URN: urn:nbn:se:uu:diva-174015OAI: diva2:525919
2012-05-25, Å: 64119, Department of Chemistry - Ångström Laboratory Box 518, SE-751 20 UPPSALA, Sweden, UPPSALA, 13:00 (English)
Available from: 2012-09-27 Created: 2012-05-09 Last updated: 2012-09-27Bibliographically approved

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Stegeby, Henrik
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