Diagrams of noncommutative Φ3 theory from string theory

Oleg Andreev, Harald Dorn
2000 Nuclear Physics B  
Starting from tree and one-loop tachyon amplitudes of open string theory in the presence of a constant B-field, we explore two problems. First we show that in the noncommutative field theory limit the amplitudes reduce to tree and one-loop diagrams of the noncommutative phi-three theory. Next, we check factorization of the one-loop amplitudes in the long cylinder limit.
doi:10.1016/s0550-3213(00)00326-6 fatcat:dzdvdp7mwrgilgltco3w5ktqom