Strong coupling transmutation of Yukawa theory

Chiang, C. C. ; Chiu, C. B. ; Sudarshan, E. C. G. (1981) Strong coupling transmutation of Yukawa theory Physics Letters B, 103 (4-5). pp. 371-375. ISSN 0370-2693

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In the strong coupling limit, it is shown that the Yukawa-type theory can be made to undergo a transmutation into an attractive separable potential theory, provided a single state is removed from the spectrum in the lowest nontrivial sector and the states at infinity which include a continuum in the next sector. If these states are not removed, the two theories are distinct. It is suggested that the full equivalence and the renormalization of four-fermion theories need further examination.

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