Consistent theory for causal non-locality beyond Born's rule

Abstract

According to the theory of relativity and causality, a special type of correlation beyond quantum mechanics is possible in principle under the name of {\it non-local box}. The concept has been introduced from the principle of non-locality which satisfies relativistic causality. In this paper, we show that a correlation leading to the non-local box is possible to be derived consistently if we release the one of major axioms in quantum mechanics, {\it Born's rule}. This allows us to obtain a theory which in one end of the spectrum agrees with the classical probability and in the other end, agrees with the theory of non-local causality. At the same time, we argue that the correlation lies in a space with special mathematical constraints such that a physical realization of the correlation through a probability measure is not possible in one direction of its limit and is possible in the other limit.