|
|
|
|
|
|
 |
|
|
SOME REMARKS ON NON-PLANAR FEYNMAN DIAGRAMS
|
|
|
|
|
|
| Organization: | Institute of Physics, University of Silesia |
| Organization: | Institute of Physics, University of Silesia |
| Organization: | Institute of Physics, University of Silesia |
| Organization: | Deutsches Elektronen-Synchrotron, DESY |
|
|
|
|
|
|
|
|
|
|
|
|
Two criteria for planarity of a Feynman diagram upon its propagators (momentum flows) are presented. Instructive Mathematica programs that solve the problem and examples are provided. A simple geometric argument is used to show that while one can planarize non-planar graphs by embedding them on higher-genus surfaces (in the example it is a torus), there is still a problem with defining appropriate dual variables since the corresponding faces of the graph are absorbed by torus generators.
|
|
|
|
|
|
|
|
|
|
|
|
|
| | | | | |
|
For the newest resources, visit Wolfram Repositories and Archives »
