Cosmological Frequency Combs
Abstract
We identify a new class of time periodic attractor solutions in scalar field cosmology, which we term Cosmological Frequency Combs (CFC). These solutions arise in exponential quintessence models with a phantom matter background and exhibit coherent phase-locked oscillations in the scalar field's normalized variables. We demonstrate that such dynamics induce modulations in observables like the Hubble parameter and growth rate, offering a dynamical mechanism to even address the H0 tension exactly. Our results uncover a previously unexplored phase of cosmic acceleration, linking the concept of frequency combs to large scale cosmological evolution.
Cite
@article{arxiv.2507.01929,
title = {Cosmological Frequency Combs},
author = {Oem Trivedi and Madhurendra Mishra and Adarsh Ganesan},
journal= {arXiv preprint arXiv:2507.01929},
year = {2025}
}
Comments
11 pages with 3 figures, first 4 pages are in letter format while the others provide supplemental calculations, comments very welcome!