Where does the Born Rule come from? We ask what is the simplest extension of

probability theory where the Born rule appears. This is answered by showing

that the Born Rule first appears as the square of the (normalized) vector

components of the notion of superposition events in the enriched probability

theory. The Superposition Principle requires the states to be represented as

(normalized) vectors in a vector space with positive, negative, or complex

components–so the rule of getting probabilities as the (absolute) squares of

normalized vector components generalizes from the simple case in the enriched

probability theory.

# The Born Rule is a feature of Superposition

October 20, 2023 by