  A Lorentz invariant framework is developed to model the cross spectrum of two
interferometers in a space-time that emerges from a Planck scale quantum system
with exact causal symmetry and holographic spacelike rotational correlations.
Space-time relationships between world lines are generated by entanglement of
geometrical states on causal diamonds. The entanglement is tied to a unique
observable signature: an exotic imaginary broad band cross spectrum, with a
frequency structure determined by the layout of the interferometers. The models
will be used to interpret data from the reconfigured Fermilab Holometer, and
for conceptual design of future experiments.
