Status of large higher dimensions

Click For Summary
SUMMARY

The discussion centers on the status of large higher dimensions, specifically addressing the second Randall-Sundrum model which proposes large dimensions instead of compactified ones. Recent findings from Spergel's group, based on neutron star collision data analyzed through electromagnetic (EM) and gravitational wave (GW) astronomy, have experimentally constrained spacetime dimensions to 3+1. This evidence effectively rules out models suggesting gravitational leakage into large extra dimensions, including 3-brane models embedded in higher-dimensional spaces.

PREREQUISITES
  • Understanding of the Randall-Sundrum model
  • Familiarity with gravitational wave astronomy
  • Knowledge of neutron star collision phenomena
  • Basic concepts of spacetime dimensions in theoretical physics
NEXT STEPS
  • Research the implications of the Randall-Sundrum model on modern physics
  • Explore gravitational wave detection techniques and their applications
  • Study the properties and significance of neutron star collisions
  • Investigate alternative theories to explain the weakness of gravity
USEFUL FOR

The discussion is beneficial for theoretical physicists, astrophysicists, and researchers interested in the implications of higher dimensions and gravitational theories.

Anne Ross
Messages
6
Reaction score
1
The second Randall-Sundrum model was based on a large as opposed to compactified dimension. Has the possible existence of large higher dimensions been eliminated and what evidence rules them out?
 
Physics news on Phys.org
Recently, Spergel's group have written a paper based on last year's widely discussed neutron star collision which was detected using both EM as well as GW astronomy. The measurement experimentally constrains the amount of spacetime dimensions to 3+1 and it has therefore ruled out models based on the hypothesis that gravitational leakage occurs into large extra dimensions (which would explain the relative weakness of gravity), such as 3-brane models embedded in higher dimensional spaces.
 
  • Like
Likes   Reactions: ohwilleke
That is great Auto-Didact. Just what I needed.
 
  • Like
Likes   Reactions: Auto-Didact

Similar threads

Undergrad Brane cosmology without string theory?
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Trying To Conceptualize Two Dimensions Of Time
  • · Replies 2 ·
Replies
2
Views
5K
Graduate Is the Randall-Sundrum model background independent?
  • · Replies 5 ·
Replies
5
Views
3K
Undergrad Modeling the Kaluza-Klein theory
  • · Replies 12 ·
Replies
12
Views
5K
Undergrad Ads/CFT and Ashtekar variables or spinfoam
  • · Replies 7 ·
Replies
7
Views
3K
Graduate "Monstrous Higgs and Leech Spacetime"
  • · Replies 0 ·
Replies
0
Views
4K
Graduate Are String Theory physicists violating the Scientific Method
  • · Replies 10 ·
Replies
10
Views
3K
Graduate What kind of evidence do we have for extra dimenisons?
  • · Replies 8 ·
Replies
8
Views
2K
High School Question regarding 'beauty' in the theories that go beyond the standard model
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Testing string/m-theory extra dimensions prediction
  • · Replies 10 ·
Replies
10
Views
3K