The pion form factor on the lattice at zero and finite temperature
We calculate the electromagnetic form factor of the pion in quenched lattice QCD. The non-perturbatively improved Sheikoleslami-Wohlert lattice action is used together with the consistently O(a)-improved current. We calculate the pion form factor for masses down to m(pi) = 360 MeV, extract the charge radius, and extrapolate toward the physical pion mass. In the second part, we discuss results for the pion form factor and charge radius at 0.93 T-c and compare with zero temperature results.
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SPRINGER WIEN