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

Ari J. Hietanen; Kari Rummukainen; Kimmo Tuominen

doi:10.1103/PhysRevD.80.094504

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

High Energy Physics - Lattice 2013-05-29 v2

Authors: Ari J. Hietanen , Kari Rummukainen , Kimmo Tuominen

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Abstract

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.

Keywords

SU(2) lattice gauge theory adjoint fermions Schroedinger functional method coupling constant evolution infrared fixed point conformal theory beta function

Cite

@article{arxiv.0904.0864,
  title  = {Evolution of the coupling constant in SU(2) lattice gauge theory with two adjoint fermions},
  author = {Ari J. Hietanen and Kari Rummukainen and Kimmo Tuominen},
  journal= {arXiv preprint arXiv:0904.0864},
  year   = {2013}
}

Comments

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

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