Non-Minimal Coupling and Particle Creation Through a Bounce

On a cosmological bounce background with a single minimum of the scale factor and unit duration, in units set by that duration, the quantities reported here are obtained by direct numerical evolution of the field modes from the contracting branch to the expanding branch. At the conformal value the occupation is 1.233e-32, again at the numerical floor, confirming the algebraic prediction inside the computation. Minimal coupling, xi equal to zero, gives 3.281e-01. The calculation is performed on a stated model background with stated vacuum conventions, and the code and full-precision output are deposited with the paper. This study is simulated and computed from those assumptions; it is not a measurement.

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Publication Details

Journal
Zenodo (CERN European Organization for Nuclear Research)
Published
2026-11-11
DOI
https://doi.org/10.5281/zenodo.24125965
Primary Topic
Cosmology and Gravitation Theories
Type
article
Field-Weighted Citation Impact
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article

Non-Minimal Coupling and Particle Creation Through a Bounce

William Alexander Aldred
Zenodo (CERN European Organization for Nuclear Research)
Cosmology and Gravitation Theories
article

Non-Minimal Coupling and Particle Creation Through a Bounce

William Alexander Aldred
article en

Abstract

On a cosmological bounce background with a single minimum of the scale factor and unit duration, in units set by that duration, the quantities reported here are obtained by direct numerical evolution of the field modes from the contracting branch to the expanding branch. At the conformal value the occupation is 1.233e-32, again at the numerical floor, confirming the algebraic prediction inside the computation. Minimal coupling, xi equal to zero, gives 3.281e-01. The calculation is performed on a stated model background with stated vacuum conventions, and the code and full-precision output are deposited with the paper. This study is simulated and computed from those assumptions; it is not a measurement.

Zenodo (CERN European Organization for Nuclear Research)
Cosmology and Gravitation Theories
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