Dark Dancers: When Dark Matter and Dark Energy Dance Together express
Galaxies are flying apart, but the expansion rate measured from the afterglow of the Big Bang and from supernova explosions doesn't match: this problem has been called the Hubble tension. It's like two dancers losing their rhythm because they can't feel each other. Edwin Hubble was the first to notice that distant galaxies are fleeing faster.
A new model fixes the dance: dark matter and dark energy are not independent but interact. Then their movements synchronize, and the discrepancy in measurements vanishes.
Testing against observations by Adam Riess and early universe data confirms: this kind of interaction makes the cosmos clearer without breaking the rest of the picture.
Original abstract
as written by the authors arXiv:2601.19662
While $$\Lambda$$CDM provides a good fit to cosmological data, it fails to address many of the outstanding questions in contemporary cosmology. Chief among these are the Hubble tension and the apparent dynamical nature of dark energy as inferred from the recent DESI DR2 analysis. In this work, we analyze a field-theoretic description of cosmology where both dark energy and dark matter are interacting spin zero fields. We give a thorough study of a wide range of the interaction strength and demonstrate the effect on the dark energy equation of state and the Hubble tension. Using the recent cosmological data, we extract constraints on cosmological parameters including the free parameters of the model.
Data from the DESI telescope has shown for the first time that dark energy might not be eternal and unchanging: its properties are evolving, meaning the biggest mystery in cosmology might have a solution.