  In this work we present a derivation of modified Raychaudhuri and Friedmann
equations from a phenomenological model of quantum gravity based on the
thermodynamics of spacetime. Starting from general gravitational equations of
motion which encode low-energy quantum gravity effects, we found its particular
solution for homogenous and isotropic universes with standard matter content,
obtaining a modified Raychaudhuri equation. Then, we imposed local energy
conservation and used a perturbative treatment to derive a modified Friedmann
equation. The modified evolution in the early universe we obtained suggests a
replacement of the Big Bang singularity by a regular bounce. Lastly, we also
briefly discuss the range of validity of the perturbative approach and its
results.
