24-30 July 2016
Highfield Campus, University of Southampton
Europe/London timezone

Discrete $\beta$-function of the SU(3) gauge theory with 10 massless domain-wall fermions

26 Jul 2016, 15:20
20m
Building 67 Room 1027 (Highfield Campus, University of Southampton)

Building 67 Room 1027

Highfield Campus, University of Southampton

Highfield Campus, Southampton SO17 1BJ, UK
Talk Physics Beyond the Standard Model Physics Beyond the Standard Model

Speaker

Prof. Ting-Wai Chiu (National Taiwan University)

Description

I present the updated results of the discrete $\beta$-function of the $SU(3)$ gauge theory with $N_f=10$ massless optimal domain-wall fermions in the fundamental representation. The renormalized coupling is obtained by the finite-volume gradient flow scheme on $ L^4 $ lattices, for seven lattice sizes: $ L/a = 8, 10, 12, 16, 20, 24, 32 $; and each with $11 - 17$ different lattice spacings parametrized by $ 6/g_0^2 $. The discrete $\beta$-function is extrapolated to the continuum limit using four lattice pairs $(L, 2L)/a =(8, 16), (10, 20), (12, 24)$ and $(16,32)$. This provides stronger evidence of the infrared fixed point at $ g_c^2 \simeq 7 $, which was first reported in arXiv:1603.08854, based on the continuum extrapolation of the discrete $\beta$-function obtained with three lattice pairs.

Primary author

Prof. Ting-Wai Chiu (National Taiwan University)

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