Cosmological frequency combs
Abstract
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 H 0 tension exactly. Our results uncover a previously unexplored phase of cosmic acceleration, linking the concept of frequency combs to large-scale cosmological evolution.
Fields of Study & Subjects
Cosmology and Gravitation Theories
Quantum Electrodynamics and Casimir Effect
Pulsars and Gravitational Waves Research
Publication details
- Journal / source
- Europhysics Letters (EPL)
- Publisher
- IOP Publishing
- Volume
- 154
- Issue
- 3
- Pages
- 39001–39001
- Publication date
- 23 March 2026
- Language
- EN