When using Fourier's trick for determining the allowable energies for stationary states, Griffiths introduces the a+- operators. When factoring the Hamiltonian, the imaginary part is assigned to the momentum operator versus the position operator. Is there a reason for this? If :
a-+ = k(ip +...
Unfortunately I lost most of my old texts in a flood in TX. I am considering getting Griffith's text on QM. If I remember correctly, we didn't learn much about Minkowski space or the Poincare group in undergrad QM. IIRC, we focused on BBR, the Bohr model, the Schroedinger equation. The grand...
Thanks guys, I am currently learning the differential geometry necessary to understand his works. As an undergrad, we were only taught the bare basics to get through QM. I've been out of school 30 years now, and I want to try to understand QM, GR, and cosmology more thoroughly. This site is a...
Hi Folks,
Where can I find a translated copy of Einstein's paper on GR? I found his 1905 paper on SR, but can't seem to locate his GR paper. Thanks in advance,
Kevin