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arXiv · 2112.09804

$K \pi$ scattering at physical pion mass using distillation

Nelson Pitanga Lachini·Peter Boyle·Felix Erben·Michael Marshall·Antonin Portelli
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Abstract

Scattering at physical pion mass is still an exploratory field in lattice QCD. This generally involves the extraction of excited states through multi-particle correlators on systems with resonances. In that context, distillation has been demonstrated to be effective both as a smearing kernel and a computational tool. Motivated by the study of the smearing profile of the distillation operator, we compare stochastic and exact distillation cases for different numbers of Laplacian eigenvectors using an RBC-UKQCD $N_f=2+1$ domain-wall fermion lattice with a physical pion mass.

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Nelson Pitanga Lachini, Peter Boyle, Felix Erben, Michael Marshall, Antonin Portelli. 2021-12-17. $K \pi$ scattering at physical pion mass using distillation. https://arxiv.org/abs/2112.09804

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