Evolution of the coupling constant in SU(2) lattice gauge theory with two adjoint fermions

Details Evolution of the coupling constant in SU(2) lattice gauge theory with two adjoint fermions Evolution of the coupling constant in SU(2) lattice gauge theory with two adjoint fermions

2009-04-06

arxiv.org/abs/0904.0864v2

Phys. Rev. D 80, 094504 (2009)

Physics

High Energy Physics

High Energy Physics - Lattice

7 pages, 5 figures; published, slightly extended version with added references. Conclusions unchanged

Scientific paper

We measure the evolution of the coupling constant using the Schroedinger 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 continuum beta-function and the coupling constant as a function of the energy scale.

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