Gradient Flow Coupling in the SU(2) gauge theory with two adjoint fermions

Jarno Rantaharju

doi:10.1103/PhysRevD.93.094516

Gradient Flow Coupling in the SU(2) gauge theory with two adjoint fermions

High Energy Physics - Lattice 2016-05-31 v2

Authors: Jarno Rantaharju

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Abstract

We study SU(2) gauge theory with two fermion flavors in the adjoint representation. Using a clover improved HEX smeared action and the gradient flow running coupling allows us to simulate with larger lattice size than before. We find an infrared fixed point after a continuum extrapolation in the range $4.5 \lesssim g^{*2} \lesssim 5$ . We also measure the mass anomalous dimension and find the value $0.25 \lesssim \gamma^* \lesssim 0.28$ at the fixed point.

Keywords

gauge theories and chiral symmetry lattice gauge theory

Cite

@article{arxiv.1512.02793,
  title  = {Gradient Flow Coupling in the SU(2) gauge theory with two adjoint fermions},
  author = {Jarno Rantaharju},
  journal= {arXiv preprint arXiv:1512.02793},
  year   = {2016}
}

Comments

6 pages, 4 figures. Additional information on simulation parameters and statistics. arXiv admin note: text overlap with arXiv:1510.03335

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