A Covariant Action with a Constraint and Feynman Rules for Fermions in Open Superstring Field Theory

Michishita, Yoji

doi:10.1088/1126-6708/2005/01/012

Article
Report number	hep-th/0412215 ; CERN-PH-TH-2004-257 ; CERN-PH-TH-2004-257
Title	A Covariant Action with a Constraint and Feynman Rules for Fermions in Open Superstring Field Theory
Author(s)	Michishita, Yoji (CERN)
Publication	2005
Imprint	20 Dec 2004
Number of pages	14
In:	JHEP 01 (2005) 012
DOI	10.1088/1126-6708/2005/01/012
Subject category	Particle Physics - Theory
Abstract	In a way analogous to type IIB supergravity, we give a covariant action for the fermion field supplemented with a constraint which should be imposed on equations of motion, in Berkovits' open superstring field theory. From this action we construct Feynman rules for computing perturbative amplitudes for fermions. We show that on-shell tree level 4-point amplitudes computed by using these rules coincide with those of the first quantization formalism.