ON THE POSITION OF SINGULARITIES OF FEYNMAN DIAGRAMS (in Russian)
Journal Article
·
· Zhur. Eksptl'. i Teoret. Fiz.
OSTI ID:4831258
The denominator of the integrand of the parametric representation of the Feynman integrals is studied. The part of the quadratic form that thus appears and depends on the external momenta is singled out. The results are used to determine the position of singular curves. The asymptote equations of the singular curves are written down for four-tails. It is shown that the second asymptote is not encountered in all the diagrams and that it is located at larger values of the finite invariant than the usual asymptote of the singular curve for variation of internal masses of the diagram. (auth)
- Research Organization:
- Inst. of Thermal Physics, Siberian Branch of the USSR Academy of Sciences
- NSA Number:
- NSA-16-018399
- OSTI ID:
- 4831258
- Journal Information:
- Zhur. Eksptl'. i Teoret. Fiz., Journal Name: Zhur. Eksptl'. i Teoret. Fiz. Vol. Vol: 42
- Country of Publication:
- Country unknown/Code not available
- Language:
- Russian
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