Differential equations method: the calculation of N (N>2)-points diagrams
Kotikov, A V
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; FEYNMAN DIAGRAM; DIFFERENTIAL EQUATIONS; PROPAGATOR; VERTEX FUNCTIONS; 662110; THEORY OF FIELDS AND STRINGS
We expand the earlier invented method of massive Feynman diagrams calculation, namely, the differential equations method, to N-point diagrams. We obtain a simple algorithm which allows us to reduce the vertex-type diagram to the propagator-type diagrams, the box-type diagram to the vertex-type diagrams and, in general, the N-point diagram to the (N-1)-point diagrams. We show that this method provides a simple procedure of evaluating the result without D-space integrals (for the dimensional regularization) calculation. 15 refs. (author).
AN Ukrainskoj SSR, Kiev (Ukraine). Inst. Teoreticheskoj Fiziki
OSTI; NTIS (US Sales Only); INIS
Ukraine
1992-12-31
English
Technical Report
Other Information: PBD: 1991
Medium: X; Size: [12] p.
ON: DE93609887
ITP-91-26
Other: ON: DE93609887; TRN: UA92A0123003289
INIS; SCA: 662110; PA: AIX-24:003289; SN: 93000913739
2008-02-12
10109034