When is it possible to use perturbation technique in field theory ? - Archive ouverte HAL
Communication Dans Un Congrès Année : 2000

When is it possible to use perturbation technique in field theory ?

Résumé

The vector pion form factor is used as an example to analyze this question. Given the experimental radius of the pion, the crucial question is whether perturbative methods could be used for the effective chiral lagrangian to calculate the pion form factor. Our analysis shows that the pion rms radius is far too large (or the related rho resonance mass is too low) for the perturbation theory to be valid.

Dates et versions

hal-00104552 , version 1 (06-10-2006)

Identifiants

Citer

Tran N. Truong. When is it possible to use perturbation technique in field theory ?. QCD 2000, 2000, Villefranche-sur-Mer, France. ⟨hal-00104552⟩
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