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arXiv · 2507.06954

Towards relativistic generalization of collapse models

Anirudh Gundhi·Lajos Diósi·Matteo Carlesso
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Abstract

Spontaneous collapse models provide a possible, testable solution to the quantum measurement problem. While experiments are providing increasingly stronger bounds on their parameters, a full-fledged relativistic extension is still missing. Previous attempts have encountered different obstacles, such as violation of microcausality, infinite energy rate, and particle production from vacuum. Here, we propose a generalization of the collapse master equation that is characterized by a local field collapse operator and a non-Markovian noise with a Lorentz invariant correlation. Our construction is able to overcome previously encountered problems and has the desirable properties in the non relativistic limit. A specific choice of the noise correlation function is also introduced and discussed.

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Anirudh Gundhi, Lajos Diósi, Matteo Carlesso. 2025-07-09. Towards relativistic generalization of collapse models. https://doi.org/10.1103/g7xn-bwfs

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