Abstract
The relativistic quantum theory of composite systems is still largely an open problem. In quantum field theory, even for a two-body system, the method that has been studied most extensively, the Bethe-Salpeter equation, gives useful results only after drastic, mostly nonrelativistic, approximations. The best way to understand the bound-state problems still seems to be via some effective potentials.
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References
A) Books
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Barut, A.O. (1980). Dynamical Groups for the Motion of Relativistic Composite Systems. In: Kramer, P., Dal Cin, M. (eds) Groups, Systems and Many-Body Physics. Vieweg Tracts in Pure and Applied Physics, vol 4. Vieweg+Teubner Verlag, Wiesbaden. https://doi.org/10.1007/978-3-663-06825-9_6
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DOI: https://doi.org/10.1007/978-3-663-06825-9_6
Publisher Name: Vieweg+Teubner Verlag, Wiesbaden
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