Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Quantum Harmonic Oscillator

  1. Oct 10, 2008 #1
    1. The problem statement, all variables and given/known data
    H = p^2/2m + (kx^2)/2 - qAx (THis is a harmonic potentional with external electric force in 1D)

    Braket:
    Definitions:
    |0, A=0 > = |0>_0 for t=0 (ground state)
    |0, A not 0 > = |0> for t=0 (ground state)

    2. Question
    1. Find the probability of being in the state |0, A not 0> for t>=0 when you are in the state |0>_0
    2. Find the coefficients for the station |0>_0 = Sigma_k c_k |k>

    3. The attempt at a solution
    1.
    P = |<0, A not 0|e^(-iE_0t)|0, A=0 >|^2 = <0, A not 0||0, A=0 >^2 = ? (how to find this, do i go over to position representation?)
    i've tried that but got an answer which didn't depend of t??? since t factor is being cancelled out by the complex conjugation.

    2. c_k = < k | | 0 >_0 = ?
     
    Last edited: Oct 10, 2008
  2. jcsd
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted