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arXiv · 2310.01343

On a Derivation of the Absorbing Boundary Rule

Roderich Tumulka
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Abstract

Consider detectors waiting for a quantum particle to arrive at a surface $S$ in 3-space. For predicting the probability distribution of the time and place of detection, a rule was proposed in [arXiv:1601.03715], called the absorbing boundary rule (ABR) and involving a 1-particle Schr\"odinger equation with an absorbing boundary condition on $S$. While plausibility arguments for the ABR were given there, it would be desirable to derive the ABR from a microscopic model of a detector. We outline here such a derivation by putting together known results from the literature. Our derivation is non-rigorous, and it would still be desirable to have a rigorous version of it in the future.

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Roderich Tumulka. 2023-10-02. On a Derivation of the Absorbing Boundary Rule. https://doi.org/10.1016/j.physleta.2023.129286

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