# Volume renormalisation The action for a $2n$-dimensional AAdS manifold is proportional to the volume, so it is natural to expect that the renormalisation of action is related to **volume renormalisation**. Volume renormalisation is well studied in the maths literature and provides information about the boundary geometry. For example, it provides important insight in [[0154 Ensemble averaging]] averaging and [[0249 Factorisation problem]] as demonstrated in [[2022#Schlenker, Witten]]. It has an advantage over holographic renormalisation because the CT is a volume integral rather than surface integral. ## Refs - related to [[0396 Kounterterms]]