Creation and annihilation operators
A creation and annihilation operator are like building blocks to describe how two particles can interact with each other.
Imagine two people who are playing a game of 'bricks and blocks.' The creation operator is like giving one of the people a 'brick' - it means they have something they can use. The annihilation operator is like taking away the brick - it means one of the people now has nothing again.
Imagine two people who are playing a game of 'bricks and blocks.' The creation operator is like giving one of the people a 'brick' - it means they have something they can use. The annihilation operator is like taking away the brick - it means one of the people now has nothing again.