  Parallel Lives (PL) is an ontological model of nature in which quantum
mechanics and special relativity are unified in a single universe with a single
space-time. Point-like objects called lives are the only fundamental objects in
this space-time, and they propagate at or below c, and interact with one
another only locally at point-like events in space-time, very much like
classical point particles. The only causes and effects in the universe occur
when lives meet locally, and thus the causal structure of interaction events in
space-time is Lorentz invariant. Each life traces a continuous world-line
through space-time, and experiences its own relative world, fully defined by
the outcomes of past events along its world-line (never superpositions), which
are encoded in its external memory. A quantum field comprises a continuum of
lives throughout space-time, and familiar physical systems like particles each
comprise a sub-continuum of the lives of the field. Each life carries an
internal memory containing a local relative wavefunction, which is a local
piece of a pure universal wavefunction, but only the relative wavefunctions are
physically real in PL, and not the universal wavefunction in configuration
space. Furthermore, while the universal wavefunction tracks the average
behavior of the lives of a system, it fails to track their individual dynamics
and trajectories. There is always a preferred separable basis, and for an
irreducible physical system, each orthogonal term in this basis is a different
relative world - each containing some fraction of the lives of the system. The
relative wavefunctions in the lives' internal memories govern which lives of
different systems can meet during future local interactions, and thereby
enforce entanglement correlations - including Bell inequality violations.
