Speaker
Description
The approach to the continuum of a given discretization of a quantum field theory is understood within the framework of Symanzik Effective Field Theory. It explains the concept of universality whereby dimensionless renormalized observables approach the same continuum value in any discretization. The functional form of these observables as functions of the lattice spacing depends on the anomalous dimensions of the involved operators and can be quite complicated. In order to state precision results in lattice field theory, we claim it is crucial to assure oneself that universality holds and that the simulation is performed in a parameter region where the continuum approach is asymptotic. Using quantities derived from the gradient flow, we perform such a test in pure gauge theory. In this talk, we report on the results from this study and demonstrate, how one can easily draw incorrect conclusions from flow-time ratios and propose a more careful method.
| Parallel Session (for talks only) | Standard Model parameters |
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