We investigate the photo-doubleionization of $H_2$ molecules with 400 eV photons. We find that the emitted electrons do not show any sign of two-center interference fringes in their angular emission distributions if considered separately. In contrast, the quasi-particle consisting of both electrons (i.e. the dielectron) does. The work highlights the fact that non-local effects are embedded everywhere in nature where many-particle processes are involved.
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