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Noncommutative Field Theories and Smooth Commutative Limits

Dongsu Bak, Sung Ku Kim, Kwang-Sup Soh, Jae Hyung Yee

hep-tharXiv:hep-th/0006087

Abstract

We consider two model field theories on a noncommutative plane that have smooth commutative limits. One is the single-component fermion theory with quartic interaction that vanishes identically in the commutative limit. The other is a scalar-fermion theory, which extends the scalar field theory with quartic interaction by adding a fermion. We compute the bound state energies and the two particle scattering amplitudes exactly.

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