Why our time dimension is about to become space-like

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SUMMARY

Theoretical physicists from the University of Salamanca assert that the universe is on the verge of losing its dimension of time, supported by calculations from Bars Mars. Their findings suggest that an observer in this transitioning universe would perceive it as expanding and accelerating away. The implications of this hypothesis raise questions about the nature of time and space, particularly regarding their existence as mere mathematical parameters rather than measurable entities. Critics emphasize the necessity of empirical testing to validate such claims, labeling the hypothesis as potentially untestable.

PREREQUISITES
  • Understanding of theoretical physics concepts, particularly in cosmology.
  • Familiarity with string theory and its implications in modern physics.
  • Knowledge of the mathematical representation of time and space as dimensions.
  • Basic grasp of energy-density and its relationship to space-time.
NEXT STEPS
  • Research the implications of Bars Mars' calculations on cosmic expansion.
  • Explore the principles of string theory and its predictive capabilities.
  • Investigate the philosophical debates surrounding the nature of time and space.
  • Study current methods in theoretical physics for testing untestable hypotheses.
USEFUL FOR

Theoretical physicists, cosmologists, and anyone interested in the philosophical implications of time and space in modern physics will benefit from this discussion.

SF
It don’t get much weirder than this. The universe is about to lose its dimension of time says a group of theoretical astrobods at the University of Salamanca in Spain. And they got the evidence to prove it.

[..]

This ain’t entirely bonkers and here’s why. Bars Mars has calculated what it’s like to be an observer in a universe that is about to flip and get this: it would look as if it were expanding and accelerating away from us. Sound familiar?

http://arxivblog.com/?p=71
 
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So... what would happen to us (if we are still around) when the signature changed?
 
SF said:
It don’t get much weirder than this. The universe is about to lose its dimension of time says a group of theoretical astrobods at the University of Salamanca in Spain. And they got the evidence to prove it.

And who says string theory can't predict anything? The corollary is that it will be the last theory ever proved. :smile:
 
I tried writing this down for future reference, but it unwrote itself.
 
Huh, that is weird. Just when you think you've heard everything!


It is an interesting idea but unless there is someway to actually test and verify it is correct it is just a curious exercise :-p
 
Is there anyonyone physisist who understand time or space as dimensions other than mathemathecal parameters? In mij opinion one can only get a sensible physical meaning of space-time if this is seen together with (its) energy-density. Time and space by themselves don't exist on their own, they are just mathematical parameters but can't be measured , can they?
So IMO the question can't be a good physical question?
 
Good observation, Brad! The hypothesis is untestable by any means imaginable. Consequences would invert to casual factors whenever the arrow of time 'flipped', resulting in an even more confusing universe.
 

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