Jr. Hiller et al., Two-point stress-tenser correlator in N=1, (2+1)-dimensional super Yang-Mills theory - art. no. 105017, PHYS REV D, 6310(10), 2001, pp. 5017
Recent advances in string theory have highlighted the need for reliable num
erical methods to calculate correlators at strong coupling in supersymmetri
c theories. We present a calculation of the correlator [0\T++(r)T++(0)\0] i
n N = 1 super Yang-Mills theory in 2 + 1 dimensions. The numerical method w
e use is supersymmetric discrete light-cone quantization, which preserves t
he supersymmetry at every order of the approximation and treats fermions an
d bosons on the same footing. This calculation is done at large N-c. For sm
all and intermediate r the correlator converges rapidly for all couplings.
At small r the correlator behaves like 1/r(6), as expected from conformal f
ield theory. At large r the correlator is dominated by the BPS states of th
e theory. There is, however, a critical value of the coupling where the lar
ge-r correlator goes to zero, suggesting that the large-r correlator can on
ly be trusted to some finite coupling which depends on the transverse resol
ution. We find that this critical coupling grows linearly with the square r
oot of the transverse momentum resolution.