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We present the first attempt of a new method to compute the pion light-conewave function (LCWF) on the lattice. We compute the matrix element between thepion and the vacuum of a non-local operator: the propagator of a ``scalarquark'' (named for short "squark"). A theoretical analysis shows that for somekinematical conditions (energetic pion and hard squark) this matrix elementdepends dominantly on the LCWF $\Phi_\pi(u), u\in [0,1]$. On the lattice, thediscretization of the parton momenta imposes further constraints on the pionmomentum. The two-point Green functions made of squark-quark and squark-squarkfields show hadron-like bound-state behaviour and verify the standard energyspectrum. We show some indications that during a short time, after beingcreated, the system of the spectator quark and the squark behave like partons,before they form a hadron-like bound state. This short time is the place wherethe partonic wave function has to be looked for.Comment: 23 pages, 21 PS figures, Late

Preliminaries on a lattice analysis of the pion light-cone wave function: A partonic signal?