  Motivated by experimental studies of graphene in the quantum Hall regime, we
revisit the phase diagram of a single sheet of graphene at charge neutrality.
Because of spin and valley degeneracies, interactions play a crucial role in
determining the nature of ground state. We show that, generically, in the
regime of interest there is a region of coexistence between magnetic and bond
orders in the phase diagram. We demonstrate this result both in continuum and
lattice models, and argue that the coexistence phase naturally provides an
explanation for unreconciled experimental observations on the quantum Hall
effect in graphene.
