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

Abstract

We consider the (1+1)-dimensional $\mathcal{N}=(2,2)$ super Yang--Mills theory which is obtained by dimensionally reducing $\mathcal{N}=1$ super Yang--Mills theory in four dimension 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 $r^{-4.75}$.

18 pages, 8 figures

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