https://doi.org/10.1140/epjc/s10052-014-3116-8
Regular Article - Theoretical Physics
More on Ramond–Ramond, SYM, WZ couplings, and their corrections in IIA
1
International Centre for Theoretical Physics, Strada Costiera 11, Trieste, Italy
2
Centre for Research in String Theory, School of Physics and Astronomy, Queen Mary University of London, Mile End Road, London, E1 4NS, UK
3
National Institute for Theoretical Physics, School of Physics and Centre for Theoretical Physics, University of the Witwatersrand, Wits 2050, Johannesburg, South Africa
* e-mail: ehsanhatefi@gmail.com
** e-mail: ehatefi@ictp.it
*** e-mail: ehsan.hatefi@cern.ch
Received:
28
September
2014
Accepted:
2
October
2014
Published online:
30
October
2014
We obtain the closed form of the correlation function of one current and four spin operators (with different chiralities) in type IIA superstring theory. The complete form of the S-matrix of one gauge, two fermions (with different chiralities) and one closed string Ramond–Ramond for all order 
type IIA has been explored. Moreover, we make use of a different gauge fixing to be able to find all the closed forms of 
correlators. An infinite number of 
-channel fermion poles of this S-matrix in the field theory of IIA is generated. Unlike the closed form of the correlators of the same amplitude of IIB, for various 
cases in type IIA we do have different double poles in 
and in 
channels and we produced them. We also find new Wess–Zumino couplings of IIA with their third order 
corrections as well as a new form of higher derivative corrections (with different coefficient from its IIB one) to SYM couplings at third order of . Using them, we are able to produce a 
channel scalar pole of the amplitude for the 
case. Finally we make some comments on corrections to IIA superstring theory.
© SIF and Springer-Verlag Berlin Heidelberg, 2014
