- Access by Xinjiang University
Higher Order Poles in the Matrix
Phys. Rev. 136, B1817 – Published 21 December, 1964
DOI: https://doi.org/10.1103/PhysRev.136.B1817
Abstract
A method is developed for studying the possibility of a coincidence of more than one complex pole of the matrix so as to produce a higher order pole. It is shown thereby that complex higher order poles may be consistent with generalized unitarity, although a real higher order pole is not consistent with physical unitarity. Also discussed is the relevance of higher order poles, and of a group of simple poles, to the Wigner time-delay formula.
References (9)
- R. J. Eden and P. V. Landshoff, Ann. Phys. (to be published)
- E. P. Wigner, Phys. Rev. 98, 145 (1955)
- M. Goldberger and K. Watson, Phys. Rev. 136, B1472 (1964)
- R. G. Newton, J. Math. Phys. 1, 319 (1960)
- R. F. Streater, Nuovo Cimento 25, 274 (1962)
- D. I. Olive, Phys. Rev. 135, B745 (1964)
- D. Zwanziger, Phys. Rev. 131, 888 (1963)
- P. V. Landshoff, Nuovo Cimento 28, 123 (1963) R. J. Eden and J. R. Taylor, Phys. Rev. 133, B1575 (1964)
Omitted endnote