Particle creation from entanglement entropy

TL;DR

This paper explores how entanglement entropy can lead to particle creation across various physical scenarios, establishing a direct link between information and matter production.

Contribution

It introduces explicit relations between entanglement entropy and particle spectra, extending known results to new regimes and scenarios.

Findings

Validated relations for particle creation from entanglement entropy in multiple scenarios

Extended understanding of particle production in low-entropy and harmonic cycle cases

Established operational link between information flow and matter creation

Abstract

We investigate how entanglement entropy can drive particle creation, deriving explicit relations between entropy and the radiated particle spectrum, the total number of particles, and the total energy. Particle production is computed for scenarios that include accelerated motion, black hole evaporation, and beta decay, validating against known results while also extending them. We focus primarily on the low-entropy limit (analogous to non-relativistic motion), but also examine cases of significant particle production arising from harmonic cycles. The results establish an explicit operational link between information flow and matter creation, providing a concrete demonstration of 'it from bit'.