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We implement a Smolin-like branching multiverse through a directed, acyclicgraph of $N$ metrics. Our gravitational and matter actions areindistinguishable from $N$ decoupled statements of General Relativity, if onevaries with respect to metric degrees of freedom. We replace $N-1$ metrics withscalar fields by conformally relating each metric to its unique graphpredecessor. Varying with respect to the $N-1$ scalar fields gives amultiscalar-tensor model which naturally features dark matter candidates.Building atop an argument of Chapline and Laughlin, branching is accomplishedwith the emergence of order parameters during gravitational collapse: webootstrap a suitably defined $N$ scalar field model with initial data from an$N-1$ field model. We focus on the nearest-neighbour approximation, determineconditions for dynamical stability, and compute the equations of motion. Themodel features a novel screening property where the scalar fields activelyadjust to decouple themselves from the stress, oscillating about the requisitevalues. In the Newtonian limit, these background values for the scalar fieldsexactly reproduce Newton's law of gravitation.

A Smolin-like branching multiverse from multiscalar-tensor theory