Commit fe228390 authored by T. van der Sar's avatar T. van der Sar
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Update 4_ZPFs.md typot

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......@@ -155,7 +155,8 @@ Coherent states have maximal "classical" energy, and even though they are (infin
- The expectation values of observables of stationary states do not depend on time.
- However, there are quantum fluctuations. These are related to the spread/curvature of the wavefunction.
- The coherent state is not a stationary state. Its time dynamics resembles that of a classical particle.
- The expectation values for position and momentum of the coherent state $|\alpha\rangle$ can expressed in terms of $\alpha$
- The coherent state is an eigenstate of the annihilation operator.
- The expectation values for position and momentum of the coherent state $|\alpha\rangle$ can be expressed in terms of $\alpha$.
# Homework Lecture 4
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