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arXiv · 0910.5611

Chiral Anomaly in Lattice QCD with Twisted Mass Wilson Fermion

Asit K. De·A. Harindranath·Santanu Mondal
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Abstract

The flavour singlet axial Ward identity with Osterwalder-Seiler twisted mass Wilson fermion action is studied on a finite lattice, with finite fermion mass and the Wilson parameter r up to 1. Approach to the infinite volume chiral limit and emergence of the anomaly is significantly better than that obtained with O(a) and O(a^2) improved fermion actions. We have shown explicitly that up to O(g^2), parity violating terms cancel in the Ward identity even at finite volume and finite lattice spacing.

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Asit K. De, A. Harindranath, Santanu Mondal. 2010-02-03. Chiral Anomaly in Lattice QCD with Twisted Mass Wilson Fermion. https://doi.org/10.1016/j.physletb.2009.10.079

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