Two-particle interference of electron pairs on a molecular level
M. Waitz, D. Metz, J. Lower, C. Schober, M. Keiling, M. Pitzer, K., Mertens, M. Martins, J. Viefhaus, S. Klumpp, T. Weber, H. Schmidt-B\"ocking,, L. Ph. H. Schmidt, F. Morales, S. Miyabe, T. N. Rescigno, C. W. McCurdy, F., Martin, J. B. Williams, M. S. Sch\"offler, T. Jahnke
TL;DR
This study explores how electron pairs emitted from molecules exhibit quantum interference effects at a molecular level, revealing non-local phenomena in many-particle processes through photo-doubleionization of hydrogen molecules.
Contribution
It demonstrates that while individual electrons do not show two-center interference, the combined electron pair (dielectron) does, highlighting non-local quantum effects in molecular ionization.
Findings
Dielectron exhibits two-center interference fringes.
Individual electrons do not show interference.
Non-local effects are pervasive in many-particle quantum processes.
Abstract
We investigate the photo-doubleionization of 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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