Angular momentum content of the rho-meson in lattice QCD

Understand

The variational method allows one to study the mixing of interpolators with different chiral transformation properties in the non-perturbatively determined physical state.

• It is then possible to define and calculate in a gauge-invariant manner the chiral as well as the partial wave content of the quark-antiquark component of a meson in the infrared, where mass is generated.
• Using a unitary transformation from the chiral basis to the LSJ basis one may extract a partial wave content of a meson.
• We present results for the ground state of the rho-meson using quenched simulations as well as simulations with two dynamical quarks, all for lattice spacings close to 0.15 fm.