Recent content by rawsilk

I have seen that form too in quantum perturbation theory and Gr lit. Thanks for your input, I'm just curious if there are any other constraints on the perturbation. Of course it must live in the same space as the background metric and can only be specified after choosing a coord map. But...

Hi all, I have recently completed two courses in general relativity and am well versed in things like the ray chaudhuri equation, tetrads, etc. I had to give a 2hr talk on gravitational radiation to my class and so understand GWs at some relatively respectable level. What I am inquiring about...

Just found these. If your looking for the prerequisites for a mathematical foundations of quantum mechanics this will do. Supplementary texts include: Kreyszig (which they use for this course, more application based) Rynne & Youngson (Heavy on Theory)...

Lasers are, practically, the only way of directing light in one direction. Ie photons traveling is parallel. You could try looking at the different types of laser systems. Lasers tend to emplify light however they can also dampen light amplitudes depending what you want.