nLab
superposition

Context

Physics

physics, mathematical physics, philosophy of physics

Surveys, textbooks and lecture notes


theory (physics), model (physics)

experiment, measurement, computable physics

Contents

Idea

In quantum theory the state of a physical system is given by a vector in a complex vector space (usually a Hilbert space). This means that given any two states ψ 1\psi_1 and ψ 2\psi_2, also their sum as vectors ψ 1+ψ 2\psi_1 + \psi_2 is represents a state. This is called the superposition of the two states.

Revised on January 23, 2014 06:24:28 by Urs Schreiber (82.113.121.190)