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The Twisted String Vertex Algorithm Applied to the -Twisted Scalar String Four Vertex
Niclas Engberg, Bengt E. W. Nilsson, Anders Westerberg
Recently an algorithm was found by means of which one can calculate terms at arbitrary oscillator level in the four-Ramond vertex obtained by sewing. Here we show that this algorit…
A Four-Reggeon Vertex for Twisted Fermionic Fields
Niclas Engberg, Bengt E. W. Nilsson
Using operator sewing techniques we construct the Reggeon vertex involving four external -twisted complex fermionic fields. Generalizing a procedure recently applied to…
An Algorithm for Computing Four-Ramond Vertices at Arbitrary Level
Niclas Engberg, Bengt E. W Nilsson, Per Sundell
We perform the sewing of two (dual) Ramond reggeon vertices and derive an algorithm by means of which the so obtained four-Ramond reggeon vertex may be explicitly computed at arbit…