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We measure the evolution of the coupling constant using the Schr\"odinger functional method in the lattice formulation of SU(2) gauge theory with two massless Dirac fermions in the adjoint representation. We observe strong evidence for an infrared fixed point, where the theory becomes conformal. We measure the β function and the coupling constant as a function of the energy scale.
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Hietanen et al. (2009) studied this question.
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