Singularities of the Second Type
- 1 July 1962
- journal article
- Published by AIP Publishing in Journal of Mathematical Physics
- Vol. 3 (4), 594-602
- https://doi.org/10.1063/1.1724262
Abstract
A new class of singularities associated with Landau‐Cutkosky diagrams is investigated. They correspond to solutions of the Landau equations with infinite internal momenta. Some of their properties depend on the spins of the participating particles. It is shown that a subset of these singularities, called pure second‐type singularities, does not appear on the physical sheet.Keywords
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