"operator" in inglés with examples - Collocation dictionary inglés
- For obvious reason the de-excitation operator is called an annihilation operator.
- Normal ordering of a product quantum fields or creation and annihilation operators can also be defined in many other ways.
- Notice that since (by the commutation relations) the order in which we write the annihilation operators does not matter.
- (which is shown in the article Creation and annihilation operators).
- The eigenstates of the annihilation operator are called coherent states:
- An annihilation operator lowers the number of particles in a given state by one.
- The eigenstate of the annihilation operator has a Poissonian number distribution (as shown below).
- So the coherent state is an eigenstate of the annihilation operator in the Heisenberg picture.
- For this reason, they are sometimes referred to as "creation" and "annihilation" operators.
- Its action on the annihilation operator produces (for simplicity we use )
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