From enemies to friends: chiral symmetry on the lattice

Details From enemies to friends: chiral symmetry on the lattice From enemies to friends: chiral symmetry on the lattice

2002-03-28

arxiv.org/abs/hep-lat/0203029v1

Physics

High Energy Physics

High Energy Physics - Lattice

Contribution to the NIC Symposium held in Juelich on December 5 and 6, 2001. It is intended for a general audience of computat

Scientific paper

The physics of strong interactions is invariant under the exchange of left-handed and right-handed quarks, at least in the massless limit. This invariance is reflected in the chiral symmetry of quantum chromodynamics. Surprisingly, it has become clear only recently how to implement this important symmetry in lattice formulations of quantum field theories. We will discuss realizations of exact lattice chiral symmetry and give an example of the computation of a physical observable in quantum chromodynamics where chiral symmetry is important. This calculation is performed by relying on finite size scaling methods as predicted by chiral perturbation theory.

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