What is the Born rule?

The Born rule is a fundamental principle in quantum mechanics that describes the probability of measuring a specific outcome for a quantum system. This rule, formulated by physicist Max Born in 1926, is essential for understanding the behavior of particles at the quantum level.

Understanding the Born rule

In quantum mechanics, a quantum system is described by a mathematical entity called the wave function. The Born rule states that the square of the absolute value of the wave function gives the probability density of finding a particle in a particular state when measured.

Implications of the Born rule

The Born rule determines the likelihood of different measurement results in quantum systems. It provides a statistical interpretation of quantum mechanics, allowing scientists to predict and understand the behavior of particles at the quantum level.

Significance in quantum physics

The Born rule plays a crucial role in quantum theory, helping to characterize and analyze quantum states and measurements. It is a foundational principle that underpins the probabilistic nature of quantum mechanics and guides our understanding of the behavior of particles in the quantum realm.