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arXiv · hep-lat/9711029

Probing the Region of Massless Quarks in Quenched Lattice QCD using Wilson Fermions

Robert G. Edwards·Urs M. Heller·Rajamani Narayanan·Robert L. Singleton Jr
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Abstract

We study the spectrum of $H(m)=γ_5 W(-m)$ with $W(m)$ being the Wilson-Dirac operator on the lattice with bare mass equal to $m$. The background gauge fields are generated using the SU(3) Wilson action at $β=5.7$ on an $8^3\times 16$ lattice. We find evidence that the spectrum of $H(m)$ is gapless for $1.02 < m < 2.0$, implying that the physical quark is massless in this whole region.

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Robert G. Edwards, Urs M. Heller, Rajamani Narayanan, Robert L. Singleton Jr. 1998-02-02. Probing the Region of Massless Quarks in Quenched Lattice QCD using Wilson Fermions. https://doi.org/10.1016/s0550-3213(98)00104-7

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