Adiabatic approximation, Gell-Mann and Low theorem and degeneracies: A pedagogical example
نویسندگان
چکیده
منابع مشابه
The Generalized Gell-Mann–Low Theorem for Relativistic Bound States
The recently established generalized Gell-Mann–Low theorem is applied in lowest perturbative order to bound–state calculations in a simple scalar field theory with cubic couplings. The approach via the generalized Gell-Mann–Low Theorem retains, while being fully relativistic, many of the desirable features of the quantum mechanical approaches to bound states. In particular, no abnormal or unphy...
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