What General Relativity Project Should I Undertake to Enhance My Knowledge?

aashay
Messages
16
Reaction score
0
I am new to General relativity and want to master it. Can you suggest some problem or a project on which I can work in summer holidays or so that will enable me to enhance my knowledge of general relativity and its applications?I have the basic knowledge of GR and am pretty familiar with the mathematics of it.
 
Physics news on Phys.org
You could try to derive different solutions, like the Schwarzschild solution or Reissner-Nordstrom solution, and do an analysis of the spacetime (consider geodesics, causal structure, etc.) Also, cosmological solutions like the Robertson-Walker metric provide a nice way to acquint yourself with different solutions.

Another nice "project" is to become acquinted with the Hilbert action, and derive the Einstein equations via a variational principle (and see how the equations are changed if you add higher order or extra derivative terms).

It depends a bit on the level you've already acquired :)
 
I've had a lot of fun playing around with computer algebra systems to find solutions to the Einstein field equations in the form of series. There are some examples in this book: http://www.lightandmatter.com/genrel/ See section 6.2.4 and ch. 9, problem 2.
 
I have already done the derivation of Einstein's equations from variational principle and have also done the Schwarzschild solutions. I will see the other solutions.
 
How about the kinetic decomposition of congruences ? I have nearly completed a package of routines that enable this to be done easily in Maxima, if you don't have gr-tensor for Maple.
 
OK, so this has bugged me for a while about the equivalence principle and the black hole information paradox. If black holes "evaporate" via Hawking radiation, then they cannot exist forever. So, from my external perspective, watching the person fall in, they slow down, freeze, and redshift to "nothing," but never cross the event horizon. Does the equivalence principle say my perspective is valid? If it does, is it possible that that person really never crossed the event horizon? The...
In this video I can see a person walking around lines of curvature on a sphere with an arrow strapped to his waist. His task is to keep the arrow pointed in the same direction How does he do this ? Does he use a reference point like the stars? (that only move very slowly) If that is how he keeps the arrow pointing in the same direction, is that equivalent to saying that he orients the arrow wrt the 3d space that the sphere is embedded in? So ,although one refers to intrinsic curvature...
So, to calculate a proper time of a worldline in SR using an inertial frame is quite easy. But I struggled a bit using a "rotating frame metric" and now I'm not sure whether I'll do it right. Couls someone point me in the right direction? "What have you tried?" Well, trying to help truly absolute layppl with some variation of a "Circular Twin Paradox" not using an inertial frame of reference for whatevere reason. I thought it would be a bit of a challenge so I made a derivation or...
Back
Top