Effective Hamiltonian Approach to Fermion-Antifermion bound States in Quantum field theory
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Date
2009-07
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Addis Ababa University
Abstract
We discuss the effective Hamiltonian approach to fermion-antifermion bound states,
which imitates its description in terms of non-relativistic potential models. This
approach is the relativistic generalization of the non-relativistic potential models. In
this framework, observables such as, the ground state energy and the triplet-singlet
mass differene of light mesons are calculated. We use both linear and funnel potential
confinements comparatively. Though the constituents of mesons basically interact
through the exchange of vector bosons, we also consider the constituents as if they
interact through the exchange of pure scalar bosons