# Stabilised Wilson fermions for QCD on very large lattices

#### Stabilised Wilson fermions for QCD on very large lattices

- Event time: 2:00pm
- Event date: 19th June 2019
- Speaker: Antonio Rago (University of Plymouth)
- Location: Higgs Centre Seminar Room, Room 4305, James Clerk Maxwell Building (JCMB) James Clerk Maxwell Building Peter Guthrie Tait Road Edinburgh EH9 3FD GB

### Event details

Rough gauge fields are an obstacle in large-scale dynamical fermion simulations with Wilson quarks.

When the pion mass is lowered and the gap of the lattice Dirac operator shrinks, algorithmic instabilities

and precision issues hamper the stability of the configurations generation and affect the estimate

of observables. Ways to overcome these problems are described in this talk for the case of the O(a)-improved

Wilson formulation of lattice QCD. The effectiveness of the proposed stabilizing and precision-control

measures is then verified through extensive simulations of 2 + 1-flavour QCD.

### About Particle Physics Theory seminars

The Particle Physics Theory seminar is a weekly series of talks reflecting the diverse interests of the group. Topics include analytic and numerical calculations based on the Standard Model of elementary particle physics, theories exploring new physics, as well as more formal developments in gauge theories and gravity..