Recent content by wduff

  1. W

    Rayleigh Ritz with two Particles

    Hello everyone, I have what should be a simple one to answer. I'm solving for 2 particles in a harmonic oscillator with a gaussian bump in the middle and a delta function interaction. I'm doing all this via Rayleigh Ritz; that is, diagonalizing the Hamiltonian to find the constants in: \Psi =...
  2. W

    Calculus of Variations in General Relativity

    Haha so it is... thanks for the link, although I suppose I should have dug it up myself. I just needed to see the formula stated a little differently I guess. Thanks!
  3. W

    Calculus of Variations in General Relativity

    Hello, this should be an easy one to answer, hope it's in the right place. I'm going through Sean M. Carroll's text on General Relativity, "Spacetime and Geometry." I'm working through calculating Christoffel connections (section 3.3, if you happen to have the book), which Carroll...
  4. W

    Wavefunction collapse and measurement

    Okay, makes sense. Thanks for your time phyzguy, glad to hear I wasn't too far from home there!
  5. W

    Wavefunction collapse and measurement

    So, rookie question, I know, but I'm having a little trouble with the idea of wavefunction collapse as it pertains to stationary states: If a measurement of energy collapses a wavefunction into an energy eigenstate, it stays there forever (unless perturbed). But my impression is that although...
  6. W

    Energy of a solid rotating sphere

    Aha! Thanks a ton tiny tim! And yeah sorry about the terrible formatting I'm sure I'll get the hang of it.
  7. W

    Energy of a solid rotating sphere

    Homework Statement A system of particles, forming a sphere of uniform mass density \rho and radius R, rotates around the axis of the sphere with angular velocity omega(t) calculate the energy of the system. Homework Equations we were told to solve the problem with this integral: E = \int...
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