Space-Like Hypersurface: Simultaneous Events?

  • Context: Undergrad 
  • Thread starter Thread starter Apashanka
  • Start date Start date
  • Tags Tags
    Space
Join the discussion
Registration is free. Ask a follow-up in this thread, or start your own.
2 replies · 2K views
Apashanka
Messages
427
Reaction score
15
If two events are occurring in a space like hypersurface...is it that the two events will appear to be simultaneous from a frame moving with velocity ##v\lt c## and will appear to be occurring at the same spatially position from a frame with velocity ##v\gt c##??
 
Physics news on Phys.org
Apashanka said:
If two events are occurring in a space like hypersurface...is it that the two events will appear to be simultaneous from a frame moving with velocity ##v\lt c##
In flat spacetime, yes. In curved spacetime there are no global frames, and you have to be a bit more careful with your definition. It would be better to say something like that they lie in a plane whose tangent vectors are everywhere spacelike.
Apashanka said:
a frame with velocity ##v\gt c##??
You cannot consistently describe such a thing.
 
  • Like
Likes   Reactions: vanhees71 and Apashanka