Lattice QCD with Chiral Quarks - Using Symmetry to Explore Symmetry Breaking Robert Mawhinney, Columbia University

Over the last 15 years, lattice discretizations of quarks that preserve chiral symmetry have progressed from beautiful theoretical ideas to practical simulation tools. With control over chiral symmetry, lattice calculations of more of the matrix elements relevant to the violation of charge-conjugation and parity (CP) symmetry in the Standard Model can be done. The progression to practical simulation tool has been aided by the continued growth in computing power, as well as marked advances in algorithms. The status of simulations with chiral quarks will be reviewed, emphasizing the physics of CP violation that is currently being done. The prospects for future simulations with physical values for the light quarks will also be discussed.