Is the decoherence interpretation of quantum mechanics falsifiable? Are there experimental results that could drive its probability down to an infinitesimal?
Sure: We could measure entangled particles that should always have opposite spin, and find that if we measure them far enough apart, they sometimes have the same spin.
That has nothing to do with decoherence. Decoherence is not an automatic outcome of basic QM, so you can’t falsify it by falsifying QM; and dechorence of a kind that implies many macroscopic non-interacting worlds is another matter anyway.
That has nothing to do with decoherence. Decoherence is not an automatic outcome of basic QM, so you can’t falsify it by falsifying QM; and dechorence of a kind that implies many macroscopic non-interacting worlds is another matter anyway.