Dynamics of Reheating in Modified Loop Quantum Cosmologies: mLQCI-I
Abstract
We study the reheating epoch and total bounce-to-present expansion in modified loop quantum cosmology using current observational determinations of the scalar amplitude and spectral index. We consider the power-law plateau potential, whose normalization is determined independently from the observed values of the scalar amplitude and spectral index. We find that, for the kinetic-energy-dominated initial conditions, the quantum-bounce regime is remarkably insensitive to this normalization, while the subsequent inflationary and reheating evolution shows a more appreciable dependence. We then investigate the sensitivity of the results to the inflationary potential by considering the Starobinsky and polynomial chaotic potentials. The reheating e-fold number and reheating temperature are found to depend strongly on both the form of the potential and, in the polynomial case, the branch selected. In contrast, the total bounce-to-present expansion satisfies the conservative bound N > 129 over the ranges considered here and remains close to the characteristic scale found in LQC. Moreover, the difference between mLQC-I and LQC is remarkably stable for all three potentials. These results suggest that reheating is strongly model dependent, whereas the small systematic shift in the total expansion is primarily associated with the different background quantum geometries of LQC and mLQC-I.
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BibTeX
@misc{fier2026dynamics,
title = {{Dynamics of Reheating in Modified Loop Quantum Cosmologies: mLQCI-I}},
author = {Jared Fier and Rui Pan and Jamal Saeed and Anzhong Wang},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.12639},
eprint = {2610.12639},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.12639},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Dynamics of Reheating in Modified Loop Quantum Cosmologies: mLQCI-I
AU - Jared Fier
AU - Rui Pan
AU - Jamal Saeed
AU - Anzhong Wang
PY - 2026
DA - 2026/10/08
PB - arXiv
DO - 10.48550/arxiv.2610.12639
UR - https://arxiv.org/abs/2610.12639
AB - We study the reheating epoch and total bounce-to-present expansion in modified loop quantum cosmology using current observational determinations of the scalar amplitude and spectral index. We consider the power-law plateau potential, whose normalization is determined independently from the observed values of the scalar amplitude and spectral index. We find that, for the kinetic-energy-dominated initial conditions, the quantum-bounce regime is remarkably insensitive to this normalization, while the subsequent inflationary and reheating evolution shows a more appreciable dependence. We then investigate the sensitivity of the results to the inflationary potential by considering the Starobinsky and polynomial chaotic potentials. The reheating e-fold number and reheating temperature are found to depend strongly on both the form of the potential and, in the polynomial case, the branch selected. In contrast, the total bounce-to-present expansion satisfies the conservative bound N > 129 over the ranges considered here and remains close to the characteristic scale found in LQC. Moreover, the difference between mLQC-I and LQC is remarkably stable for all three potentials. These results suggest that reheating is strongly model dependent, whereas the small systematic shift in the total expansion is primarily associated with the different background quantum geometries of LQC and mLQC-I.
ER -