  If we look at from a quantum perspective, the most natural way in which the
universe can be created is in entangled pairs whose time flow is oppositely
related. This suggests the idea of the creation of a universe-antiuniverse
pair. Assuming the validity of this hypothesis, in this paper, we show that the
universe expands in an accelerated manner. The same reasoning holds for the
anti-universe as well. This idea does not require any form of dark energy as
used in the standard cosmological model of ${\Lambda}$CDM or in the modified
theories of gravity.
