I know that the formula for the expectation value is:(adsbygoogle = window.adsbygoogle || []).push({});

<Q(x,p)> = ∫ψ*Q(x,(h/i)d/dx)ψ dx

For instance, the expectation value for momentum is.

-ih∫ψ*(dψ/dx)dx

But, why? How is it derived?

**Physics Forums - The Fusion of Science and Community**

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!

# Expectation Values

Loading...

Similar Threads - Expectation Values | Date |
---|---|

I Expectation value of energy in TISE | Oct 18, 2017 |

I Help with an expectation value formula | Sep 16, 2017 |

I The symmetry argument and expectation value | Jun 17, 2017 |

I Factorising expectation values | May 24, 2017 |

I Which ψ do I use for the Expectation Value ? | Feb 27, 2017 |

**Physics Forums - The Fusion of Science and Community**