# The 8th International Workshop on the CKM Unitarity Triangle

8-12 September 2014
Vienna University of Technology
Europe/Vienna timezone

## Inclusion of isospin breaking effects in lattice simulations

8 Sep 2014, 18:15
30m
EI 9 lecture hall (Vienna University of Technology)

### EI 9 lecture hall

#### Vienna University of Technology

Gußhausstraße 25-29, 1040 Wien (Vienna), AUSTRIA

### Speaker

Antonin Portelli (University of Southampton)

### Description

Isospin symmetry is explicitly broken in the Standard Model by the non-zero differences of mass and electric charge between the up and down quarks. Both of these corrections are expected to have a comparable size of the order of one percent relatively to hadronic energies. Although these contributions are small, they play a crucial role in hadronic and nuclear physics. We explain how to properly define QCD and QED on a finite and discrete space-time so that isospin corrections to hadronic observables can be computed ab-initio. We then consider the different approaches to compute lattice correlation functions of QCD and QED observables. Finally we summarise the actual lattice computations which include isospin breaking effects.

 Slides