Unifying Gravity: How Physicists Concluded 10-35m Unification

  • Context: Undergrad 
  • Thread starter Thread starter kent davidge
  • Start date Start date
  • Tags Tags
    Gravity
Click For Summary

Discussion Overview

The discussion centers on the concept of gravitational unification with the other fundamental interactions at the scale of 10^-35 meters. Participants explore the reasoning behind this specific scale and the theoretical frameworks, such as String Theory, that propose mechanisms for unification.

Discussion Character

  • Debate/contested

Main Points Raised

  • Some participants assert that there is no definitive knowledge regarding the unification of gravity at 10^-35 meters, describing it as a possibility to consider.
  • Others reference String Theory, which suggests that very small scale 'extra dimensions' could lead to unification, though they note the lack of experimental evidence supporting this theory.
  • A participant questions the rationale behind the specific choice of 10^-35 meters, suggesting that it seems arbitrary without a clear justification.

Areas of Agreement / Disagreement

Participants generally agree that the unification at this scale is not definitively established and remains a topic of speculation, with multiple competing views on the theoretical frameworks involved.

Contextual Notes

There are limitations in the discussion regarding the assumptions made about the scale of unification and the dependence on theoretical models like String Theory, which currently lack experimental validation.

kent davidge
Messages
931
Reaction score
56
How do physicists know that at 10-35m gravitation becomes unified with the other three interactions. How they came to their conclusion?

Please note it's not a homework question. :smile:
 
Physics news on Phys.org
Nobody knows this. It's a possibility to be considered.
 
Vanadium 50 said:
Nobody knows this. It's a possibility to be considered.
As far as I understand things, String Theory has an approach that involves very small scale 'extra dimensions' and that seems to achieve unification. But there's no experimental evidence for this so it's a more a matter of what takes your fancy. The human mind loves to see loose ends tied up and String Theory does just that.
 
Vanadium 50 said:
Nobody knows this. It's a possibility to be considered.
sophiecentaur said:
As far as I understand things, String Theory has an approach that involves very small scale 'extra dimensions' and that seems to achieve unification. But there's no experimental evidence for this so it's a more a matter of what takes your fancy. The human mind loves to see loose ends tied up and String Theory does just that.
Ok. But I think they should have a reason for that choice of 10 -35m. Why would it be a random value? Does not make sense.
 

Similar threads

Undergrad Is Gravi-GUT a candidate theory of everything?
  • · Replies 17 ·
Replies
17
Views
4K
Undergrad Graviweak Unification and Coleman-Mandula theorem
  • · Replies 7 ·
Replies
7
Views
3K
Undergrad Is Gravity a Force or Curvature?
  • · Replies 20 ·
Replies
20
Views
6K
Undergrad The standard model from loop quantum gravity via spinors octonions
  • · Replies 26 ·
Replies
26
Views
6K
Graduate Just standard model and gravity, up to high energies? An update
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad What are the Priority Tasks for High Energy Physics Beyond the Standard Model?
  • · Replies 1 ·
Replies
1
Views
3K
Undergrad Wick-rotated Riemannian metric that takes leaky gravity into account
  • · Replies 2 ·
Replies
2
Views
1K
Graduate Gravity Measured with Milligram masses
  • · Replies 3 ·
Replies
3
Views
1K
Undergrad How Did 1900s Physicists Misjudge the Completeness of Physics?
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Is Gravity Actually the Result of Quantum Collapses?
  • · Replies 2 ·
Replies
2
Views
2K