1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
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: Coordinate space and momentum space

  1. Sep 11, 2008 #1
    1. The problem statement, all variables and given/known data

    given A(k)=N/(k2+a2) calculate psi(x) and show that

    (delta k * delta x) > 1

    independent of the choice of a

    3. The attempt at a solution

    I calculated psi(x) to be (N*pi/a)*e-|ax|

    Would it be ok to compute <x> and <x2> in coordinate space and <k> and <k2> in momentum space (which gives me simple multiplication for all my operators) and then find (delta x * delta k) using

    delta x = sqrt(<(x-<x>)>) and delta k = sqrt(<(k-<k>)>) ?

    do i have to transform anything before I do this? How would I do that?

    Thank you
  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