How Internal Noise Destroys Quantum Magic ⚡ экспресс
The reason for the absence of observable superpositions of macroscopic states in the real world is examined. By representing quantum macrostates as statistical ensembles of microstates, it is shown that any superposition of macrostates is reduced within a very short time due to the unitary dynamics of the standard Schrödinger equation, allowing the Born rule to be derived without postulation. Macroscopic and microscopic degrees of freedom are separated in the Schrödinger equation, yielding an effective stochastic equation for macrovariables, in which the ensemble average of microscopic amplitudes acts as a self-generated internal white noise. It is shown that this equation is a reducing Itô process under general causality conditions, predicting a rapid collapse of any macro superposition right after its emergence, with probabilities satisfying the Born rule. In the context of the von Neumann measurement scheme, the result is discussed as a simple dynamical solution to the measurement problem.
In a football stadium, the crowd's emotions arise from the chatter of individual fans. If mood could be both joyful and sorrowful at once, you'd have a quantum superposition. But the murmur of thousands of voices instantly forces that blend into a single definite state.
So it is with large objects: their quantum superpositions are destroyed by the internal noise of myriads of particles. This noise, linked to entropy—a measure of disorder—acts like random interference, forcing the uncertainty to collapse as suddenly as a supernova flares in the sky. Physicists have shown that the standard Schrödinger equation handles this without invoking an observer — it all follows from standard quantum theory. Thus the puzzle that tormented Schrödinger, von Neumann, and Born is solved: Born's rule, which predicts probabilities, is derived from first principles. Microscopic chaos itself imposes order on the large-scale world.
🎯 In a mole of any substance, there are more particles than stars in the observable universe — and each one contributes to the noise that kills quantum uncertainty.
🎬 The idea of a cat being both alive and dead has inspired many sci-fi writers, from early short stories to the TV show 'Rick and Morty'.