Find the expectation value of the potential energy in the nth state of the harmonic oscillator.(adsbygoogle = window.adsbygoogle || []).push({});

This is his example 2.5 in the book, he uses a[itex]\pm[/itex]=1/Sqrt[2hmw]([itex]\mp[/itex]ip+mwx) to get x=Sqrt[h/2mw](a[itex]_{+}[/itex]+a[itex]_{-}[/itex])

My question how does he do this? I can't seem to make the algebraic manipulations to get it into that form to follow out his example.

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Quantum Griffiths Example

**Physics Forums | Science Articles, Homework Help, Discussion**