Holographic complexity and the Hubble tension: a quantum gravity portrayal for the large scale structure of the cosmos

In this letter, we propose a relationship between the so-called Hubble-Lemaître constant $H_0$ and holographic complexity related to the emergence of spacetime in quantum gravity. Such a result can represent an important step to understanding the Hubble tension by introducing a quantum gravity perspective for cosmological observations: regarding the degree of quantum complexity we measure around us.