Particle Creation from Vacuum by Lorentz Violation
Nima Khosravi

TL;DR
This paper explores how Lorentz violation in quantum gravity models can lead to spontaneous particle creation from vacuum, suggesting particles as evidence of quantum gravitational effects in the early universe.
Contribution
It introduces a model where Lorentz violation modifies dispersion relations, leading to particle creation from vacuum, linking quantum gravity effects to observable matter.
Findings
Vacuum state can evolve into a particle-filled universe due to Lorentz violation.
Modified dispersion relations represent quantum gravity regimes.
Spontaneous matter field emergence from vacuum is possible without external sources.
Abstract
It is shown that the vacuum state in presence of Lorentz violation can be followed by a particle-full universe that represents the current status of the universe. In this model the modification in dispersion relation (Lorentz violation) is picked up representing the regime of quantum gravity. The result can be interpreted such that the existence of the particles is an evidence for quantum effects of gravity in the past. It is concluded that only the vacuum state is sufficient to appear the matter fields spontaneously after the process of semi-classical analysis.
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