Kvantumamplitúda

Kvantumamplitúda refers to the probability amplitude in quantum mechanics. It is a complex number whose squared magnitude gives the probability of a specific outcome in a quantum measurement. These amplitudes are fundamental to describing the behavior of quantum systems, such as particles or fields.

The concept of quantum amplitudes originates from the wave function, often denoted by the Greek letter psi (Ψ). The wave function itself is not directly observable, but its associated probability density, |Ψ|², represents the likelihood of finding a particle in a particular region of space. The quantum amplitude is the wave function itself.

In quantum field theory, amplitudes are used to calculate the probabilities of interactions between particles. These calculations are often performed using Feynman diagrams, where each diagram represents a specific process and its associated amplitude. The interference between different amplitudes can lead to phenomena like superposition and entanglement, which are hallmarks of quantum mechanics. The value of a quantum amplitude depends on the specific quantum state and the observable being measured.