Cosmological Frequency Combs
Oem Trivedi, Madhurendra Mishra, Adarsh Ganesan

TL;DR
This paper introduces Cosmological Frequency Combs, a new class of solutions in scalar field cosmology that produce phase-locked oscillations affecting cosmic observables and potentially resolving the H0 tension.
Contribution
It identifies and characterizes a novel class of time periodic attractor solutions in scalar field cosmology, linking frequency combs to cosmic acceleration.
Findings
CFC solutions induce observable modulations in Hubble parameter and growth rate
They provide a dynamical mechanism to address the H0 tension
Uncover a new phase of cosmic acceleration
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.
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Taxonomy
TopicsCosmology and Gravitation Theories · Quantum Electrodynamics and Casimir Effect · Pulsars and Gravitational Waves Research
