https://doi.org/10.1140/epjc/s10052-025-14739-0
Letter
The Hubble tension as an effect of the renormalization of fundamental constants and cosmological parameters
1
Department of Architecture, Roma Tre University, Largo Giovanni Battista Marzi, 10, 00153, Rome, Italy
2
Istituto Nazionale di Fisica Nucleare, Sezione di Roma 3, Via della Vasca Navale 84, 00146, Rome, Italy
3
Istituto Nazionale di Alta Matematica Francesco Severi, Gruppo Nazionale di Fisica Matematica, Città Universitaria, P.le A. Moro 5, 00185, Rome, Italy
a fabio.briscese@uniroma3.it, briscese.phys@gmail.com
Received:
30
July
2025
Accepted:
3
September
2025
Published online:
18
September
2025
In this Letter we propose an interpretation of the Hubble tension as an effect of the scale-running of cosmological parameters and fundamental constants, as the Newton’s constant G and the cosmological constant 
. Namely, the tension between 
measurements by CMB and Supernovae observations would be a consequence of the fact that the value of depends (due to the running of G and ) on the scale at which it is measured. Indeed, the two different values of the Hubble parameter today correspond to the two different cosmological scales at which Supernovae and CMB measurements probe our universe. We discuss some possible theoretical scenarios in which the running of G and can occur. We stress that one should interpret such a running as a scale-dependence of the cosmological parameters and fundamental constants at the same time rather than a time dependence, as it is usually considered in the literature.
© The Author(s) 2025
corrected publication 2025
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