Is causal structure in classical GR still an open area of research?

  • I
  • Thread starter hideelo
  • Start date
  • #1
hideelo
91
15
I am currently taking graduate course in GR following Carroll and Wald and we just started covering causal structure. In all my years studying physics this has been the first time something made me stop and go "I would love to spend a decade on this". To me it's a perfect blend of well posed mathematical problems and fundamental questions about reality. However I don't know if this is still an active area of research. If anyone can shed any light on this I would really appreciate it.

[Moderator's note: edited for spelling of "causal".]
 
Last edited by a moderator:

Answers and Replies

  • #2
robphy
Science Advisor
Homework Helper
Insights Author
Gold Member
6,550
1,921
As far as I know, there is some (but not a lot) activity in causal structure in classical GR.
For example, here are some papers by Minguzzi
http://arxiv.org/abs/0708.2070
http://arxiv.org/abs/gr-qc/0703128

In classical GR, maybe one can try to find ways to weaken the causality conditions to extend various theorems (e.g. singularity theorems).
In attempts to formulate quantum gravity, there is more activity (e.g. Sorkin's http://en.wikipedia.org/wiki/Causal_sets ; see also Dowker http://arxiv.org/abs/gr-qc/0508109 ).
 

Suggested for: Is causal structure in classical GR still an open area of research?

Replies
3
Views
561
Replies
1
Views
358
  • Last Post
Replies
4
Views
373
Replies
22
Views
591
  • Last Post
Replies
8
Views
597
Replies
21
Views
463
Replies
31
Views
2K
  • Last Post
Replies
17
Views
595
  • Last Post
Replies
22
Views
754
  • Last Post
Replies
7
Views
464
Top