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Partially conserved axial vector current and applications

S. Kazmin, R. Horsley, Y. Nakamura, H. Perlt, P. Rakow, G. Schierholz, A. Schiller, J. Zanotti

in 34th annual International Symposium on Lattice Field Theory

Contribution: pdf


We investigate implications of the use of the point-split axial
vector current derived from a Wilson like fermionic action. We compute the corresponding renormalization factor nonperturbatively for one beta value. The axial charge gA calculated from this nonlocal current is found to be nearer to the physical value than computed with the local axial vector current -- computed both on the same lattice with the same action.