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- W2005992056 abstract "In an effort to extend the semiclassical intuitions developed in infrared-dominated field theories (quantum electrodynamics, ${ensuremath{varphi}}^{3}$, etc.) to field theories more likely characteristic of strong interactions, we have considered the high-energy-small-momentum-transfer limit of the ordinary linearly coupled fermion-pseudoscalar (nucleon-pion) interaction. In contrast with the infrared theories, we find (without using a cutoff) dominance of hard exchanged pions, but with a dynamically forced pairwise correlation resulting in an $s$-dependent effective potential appearing in the eikonal phase. The correspondence of the nonfixed-pole soft two-pion structure thus developed to a nonlocal generalization of Wentzel-pair theory is made, and the qualifications on the quantum field theory necessary to produce this semiclassical picture are explored. The role played by internal structure such as spin, isospin, and chiral symmetry is particularly interesting. The asymptotic behavior of the theory is extracted and we find that the dominant $Nensuremath{-}N$ amplitude is $s$-channel helicity nonflip." @default.
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- W2005992056 date "1971-07-15" @default.
- W2005992056 modified "2023-10-13" @default.
- W2005992056 title "Eikonal Approximation in Pseudoscalar Theory" @default.
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- W2005992056 doi "https://doi.org/10.1103/physrevd.4.532" @default.
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