  Here, we study quantum coherence of N-partite GHZ
(Greenberger-Horne-Zeilinger) and W states in the multiverse consisting of N
causally disconnected de Sitter spaces. Interestingly, N-partite coherence
increases monotonically as the curvature increases, while the Unruh effect
destroys multipartite coherence in Rindler spacetime. Conversely, the curvature
effect destroys quantum entanglement and discord, meaning that the curvature
effect is beneficial to quantum coherence and harmful to quantum correlations
in the multiverse. We find that, with the increase of n expanding de Sitter
spaces, N-partite coherence of GHZ state increases monotonically for any
curvature, while quantum coherence of the W state decreases or increases
monotonically depending on the curvature. We find a distribution relationship,
which indicates that the correlated coherence of N-partite W state is equal to
the sum of all bipartite correlated coherence in the multiverse. Multipartite
coherence exhibits unique properties in the multiverse, which argues that it
may provide some evidence for the existence of the multiverse.
