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Calculating scalar mesons from a light-cone Hamiltonian in QCD

Bielefeld, SusanneUniversität Heidelberg

… teilweise regulierten Modells dar. Nachdem die Renormierung durchgeführt worden ist, werden die Eigenwerte und Eigenfunktionen aller Mesonen gleichzeitig berechnet. Ihre Werte sind verglichen mit den experimentellen Daten sehr gut, der Fehler liegt bei weniger als 5 Die besten Resultate wurden …

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Applications of the density matrix renormalization group to mesoscopic phenomena

Gobert, DominiquePublikationsserver der RWTH Aachen University2005

In this thesis, I analyze properties of mesoscopic systems that exhibit strong quantum correlations. To this purpose, I adapt and use the density-matrix renormalization group (DMRG), a numerical method that has been developed specifically for analyzing such systems. The following systems are …

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Operator-theoretic infrared renormalization and construction of dressed 1-particle states in non-relativistic QED

Chen, ThomasETH Zürich2001

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Constructing quantum spacetime

Steinhaus, Sebastian PeterUniversität Potsdam

Despite remarkable progress made in the past century, which has revolutionized our understanding of the universe, there are numerous open questions left in theoretical physics. Particularly important is the fact that the theories describing the fundamental interactions of nature are incompatible. …

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