Single particle energy diffusion from relativistic spontaneous localization

TL;DR

This paper investigates how spontaneous localization models predict energy diffusion for relativistically moving particles, proposing a method to analyze these effects by transforming non-relativistic results from the particle's rest frame to an inertial observer's frame, with implications for astrophysical observations.

Contribution

It introduces a relativistic extension of spontaneous localization models allowing energy diffusion analysis via frame transformation from the particle's rest frame.

Findings

Energy distribution of particles evolves due to spontaneous localization.

Relativistic effects can be analyzed using non-relativistic models in the rest frame.

Potential astrophysical observations could detect energy diffusion effects.

Abstract

Energy diffusion due to spontaneous localization (SL) for a relativistically-fast moving particle is examined. SL is an alternative to standard quantum theory in which quantum state reduction is treated as a random physical process which is incorporated into the Schr\"odinger equation in an observer-independent way. These models make predictions in conflict with standard quantum theory one of which is non conservation of energy. On the basis of proposed relativistic extensions of SL it is argued that for a single localized particle, non-relativistic SL should remain valid in the rest frame of the particle. The implication is that relativistic calculations can be performed by transforming non-relativistic results from the particle rest frame to the frame of an inertial observer. This is demonstrated by considering a relativistic stream of non-interacting particles of cosmological origin and showing how their energy distribution evolves as a result of SL as they traverse the Universe. A solution is presented and the potential for astrophysical observations is discussed.