Vielbeins: Is $$e^1.e^1$$ a Basis Like $$i.i=1$$?

  • Thread starter Thread starter PhyAmateur
  • Start date Start date
  • Tags Tags
    General relativity
PhyAmateur
Messages
103
Reaction score
2
If $$e^1$$ is a form like the ones in tetrad formalism (vielbeins). If we have $$e^1 . e^1$$ can we treat those as basis like $$i.i=1$$?
 
Physics news on Phys.org
I think the reason you haven't gotten any answers is that the question is unclear.
 

Thread 'I don't see how a black hole's event horizon can be crossed'

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...
View full post »

Thread 'Question about Parallel Transport'

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...
View full post »

Thread 'Trying to calculate proper time of worldlines using rotating frames'

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...
View full post »

Similar threads

I Null energy condition constrains the metric
Replies
5
Views
1K
Israel Wilson Perjes Metric: Tetrad Formalism Reference
Replies
5
Views
2K
A Tensors in null basis
Replies
9
Views
1K
Unraveling the Mystery of Spin Connection in an Expanding Universe
Replies
2
Views
2K
I A sufficient condition for integrability of equation ##\nabla g=0##
2
Replies
71
Views
1K
I Strange index notation for linear transformation matrix
Replies
4
Views
1K
A How to Express the Schwarzschild Metric in Fermi Normal Coordinates?
Replies
13
Views
2K
Vielbein Postulate: Unpacking Carroll's Derivation
Replies
4
Views
6K
A Continuation of Coordinates Across Black Hole Horizons
Replies
5
Views
2K
I Can time be another basis vector under Galilean relativity?
3
Replies
146
Views
9K

Hot Threads

Recent Insights

Back
Top