The influence of pairing in the passage of two particles through the potential barrier

Morris Muskat, Elmer Hutchisson

I. K. Karpenko

Lajos Jánossy

Vladimir A. Namiot, Ljudmila Yu. Shchurova

Abstract—The issue of how observation of a process in quantum mechanics may influence its outcome is described by case studies of quantum emission by a two-level system and the passage of a particle through a potential barrier. In the first case, the observation can reduce the probability of quantum emission by the two-level system (the quantum Zeno effect). In the second case, the observation of a particle can significantly increase the probability for a particle to pass through a barrier, sometimes even by many orders of magnitude (the barrier anti-Zeno effect). The possibility of such effects in biological systems is discussed.

G. F. Drukarev

Alexander Vilenkin, Serge Winitzki

We introduce a model detector which registers the passage of a particle through the detector location, without substantially perturbing the particle wave function. (The exact time of passage is not determined in such measurements.) We then show that our detector can operate in a classically forbidden reigon and register particles passing through a certain point under a potential barrier. We show that it should be possible to observe the particle's track under the barrier.