Dirac Delta Distribution

- Modern Physics -
Quantum Mechanics Dictionary
Definition

A quantum mechanics concept defining a model element, mathematical object, or experimental method used to predict measurable outcomes. It applies when required assumptions and definitions are specified and yields computable probabilities and expectation values. It does not ensure correctness without validation of approximations, numerical stability, and consistency of units and conventions.

Dirac Delta Distribution

Natural & Formal Sciences Dictionary
Definition
A generalized function defined as a continuous linear functional on a space of test functions that maps a test function to its value at a specified point; it is not an ordinary function but a distribution with the sifting property.