Energy expectation value of the two-pion-exchange three-body force in the triton

The energetic shift caused by the two-pion-exchange three-nucleon force in the triton is estimated in first order perturbation theory. The triton wave function $\psi$ is gained through a Faddeev calculation using the Reid potential. Within the restricted presentation of $\psi$ strong cancellations between terms of the order of 1 MeV lead to an unimportant small effect.