18-24 June 2017
Palacio de Congresos
Europe/Madrid timezone
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Contribution Parallel

Seminarios 1+2
Standard Model Parameters and Renormalization

Dirac spectral density and mass anomalous dimension in 2+1-flavor QCD

Speakers

  • Mr. Katsumasa NAKAYAMA

Primary authors

Co-authors

Content

We compute the Dirac spectral density of QCD in a wide range of eigenvalues by using the stochastic approach. The spectral density at relatively high eigenvalues can be used to extract the mass anomalous dimension. We use 2+1-flavor lattice ensembles generated with Mobius domain-wall fermion at three lattice spacings (a=0.083, 0.055, 0.044 fm) to estimate the continuum limit. The discretization effect can be minimized by a generalization of the valence domain-wall fermion. We compare the results with the perturbation theory available to O(alpha_s^4).