  In this letter, we describe a novel scheme for searching for physics beyond
the Standard Model. The idea is based on correlation of time-synchronized
readouts of distant ($\gtrsim$100~km) optical magnetometers. Such an approach
limits hard-to-identify local transient noise, providing the system with unique
capabilities of identification of global transient events. Careful analysis of
the signal can reveal the nature of the events (e.g., its nonmagnetic origin),
which opens avenues for new class of exotic-physics searches (searches for
global transient exotic spin couplings) and tests of yet unverified theoretical
models.

High Energy Physics - Experiment;Atomic Physics;Instrumentation and Detectors