Take the 2-minute tour ×
Physics Stack Exchange is a question and answer site for active researchers, academics and students of physics. It's 100% free, no registration required.

light has a non-zero energy-stress tensor, so a flux of radiation will slightly affect curvature of spacetime

Question: assume a flux of radiation in the $z$ direction, in flat Minkowski space it will propagate and spread slightly in the $x$ and $y$ directions. But what happens if we take into account self-gravitational effects of light onto itself? will the radiation flux self-gravitate and eventually reconverge?

share|improve this question
    
Very nice question +1. Do they spread because of quantum loop box diagrams? What about the polarization of the photons? –  drake Sep 21 '12 at 3:35
    
Related physics.stackexchange.com/questions/6197/… –  drake Sep 21 '12 at 3:50
add comment

Know someone who can answer? Share a link to this question via email, Google+, Twitter, or Facebook.

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Browse other questions tagged or ask your own question.