CESNET, zájmové sdružení právnických osob

Varying Gravity from a Modified Fractional Model: Observational Constraints and Slow–Fast Dynamics

We investigate a fractional gravity model in which both the Hubble parameter and the gravitational constant evolve dynamically due to fractional renormalization-group effects. The model incorporates a scalar field coupled to a time-varying G, generating nonlocal corrections chara...