A Worked examples Cartan Formalism

  • A
  • Thread starter Thread starter zwoodrow
  • Start date Start date
zwoodrow
Messages
34
Reaction score
0
TL;DR Summary
looking for worked examples of cartan formalism calculation of one form connections and two form connections
I am learning the cartan formalism from the book Relativity Demystified. It has a few examples. I am looking for more examples in video, notes, or books of the work calculations of the connection one forms and the curvature two forms to check my calculations against. My search so far has turned up not much. Thank you
 
Physics news on Phys.org
Sean Carroll (Spacetime and Geometry) does the simple case of an expanding universe in his Appendix J.

Jetzer does the Schwarzschild case in his lectures. (I can't find a simple direct link -- just google for Jetzer and "advanced topics in GR".)

Matthias Blau does Schwarzschild and Kaluza Klein in his lecture notes (which are, imho, good for other things as well at a more advanced level).

Wald also does Schwarzschild in his book "General Relativity".

Is there a particular example you wanted?
 
 
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...
ASSUMPTIONS 1. Two identical clocks A and B in the same inertial frame are stationary relative to each other a fixed distance L apart. Time passes at the same rate for both. 2. Both clocks are able to send/receive light signals and to write/read the send/receive times into signals. 3. The speed of light is anisotropic. METHOD 1. At time t[A1] and time t[B1], clock A sends a light signal to clock B. The clock B time is unknown to A. 2. Clock B receives the signal from A at time t[B2] and...
From $$0 = \delta(g^{\alpha\mu}g_{\mu\nu}) = g^{\alpha\mu} \delta g_{\mu\nu} + g_{\mu\nu} \delta g^{\alpha\mu}$$ we have $$g^{\alpha\mu} \delta g_{\mu\nu} = -g_{\mu\nu} \delta g^{\alpha\mu} \,\, . $$ Multiply both sides by ##g_{\alpha\beta}## to get $$\delta g_{\beta\nu} = -g_{\alpha\beta} g_{\mu\nu} \delta g^{\alpha\mu} \qquad(*)$$ (This is Dirac's eq. (26.9) in "GTR".) On the other hand, the variation ##\delta g^{\alpha\mu} = \bar{g}^{\alpha\mu} - g^{\alpha\mu}## should be a tensor...
Back
Top