•Topologies and fields insertion

Construction of topologies:

tops = CreateTopologies[0, 2 -> 2, Adjacencies -> {3}, ExcludeTopologies -> {SelfEnergies, WFCorrections}, CountertermOrder -> 0] ;

Paint[tops, ColumnsXRows -> {3, 1}, AutoEdit -> False] ;

[Graphics:../HTMLFiles/index_29.gif]

Field insertion:

inserttops = InsertFields[tops, {Electron[0], Electron[0]} -> {Electron[0], Electron[0]}, Model -> "Automatic", GenericModel -> "Automatic", InsertionLevel -> Classes] ;

Graphical representation of the process:

treegraphs = Paint[inserttops, PaintLevel -> {Classes}, AutoEdit -> False, SheetHeader -> False, Numbering -> False, ColumnsXRows -> {2, 1}] ;

[Graphics:../HTMLFiles/index_32.gif]

Converted by Mathematica  (July 10, 2003)