Improved results for N= (2,2) super Yang-Mills theory using supersymmetric discrete light-cone quantization

We consider the (1+1)-dimensional N=(2,2) super Yang-Mills theory which is obtained by dimensionally reducing N=1 super Yang-Mills theory in four dimensions to two dimensions. We do our calculations in the large-N_c approximation using supersymmetric discrete light cone quantization. The objective is to calculate quantities that might be investigated by researchers using other numerical methods. We present a precision study of the low-mass spectrum and the stress-energy correlator 〈T⁺⁺(r)T ⁺⁺(0)〉. We find that the mass gap of this theory closes as the numerical resolution goes to infinity and that the correlator in the intermediate r region behaves like r^-4.75.