Undergrad Inhomogeneities and topological defects in cosmology...

Click For Summary
Inhomogeneities and topological defects, such as cosmic strings, have been suggested to potentially break fundamental symmetries in cosmology, including Poincaré and Lorentz symmetries. However, the discussion reveals a lack of specific references or citations to support these claims. Participants express a need for context and credible sources regarding the relationship between these defects and symmetry breaking. The inquiry highlights a gap in available literature on the topic. Further research and citations are necessary to substantiate these assertions in cosmological studies.
Suekdccia
Messages
352
Reaction score
30
TL;DR
Could inhomogeneties and/or topological defects break the fundamental symmetries of the universe?
I have heard that some types of inhomogeneties and topological defects (like cosmic strings) in cosmology have been proposed to be able to break fundamental symmetries of nature such as the Poincaré, Lorentz, diffeomorphism CPT, spatial/time translational...etc symmetries... However, I have not been able to find any references about this. Is this true? Is there anything about this?
 
Space news on Phys.org
Suekdccia said:
I have heard ...
Can you please provide a specific citation? Context would be helpful.
 
Suekdccia said:
I have not been able to find any references about this.
You heard it from somewhere. Where?
 

Thread 'Estimates — True Size of the Universe?'

I always thought it was odd that we know dark energy expands our universe, and that we know it has been increasing over time, yet no one ever expressed a "true" size of the universe (not "observable" universe, the ENTIRE universe) by just reversing the process of expansion based on our understanding of its rate through history, to the point where everything would've been in an extremely small region. The more I've looked into it recently, I've come to find that it is due to that "inflation"...
View full post »

Similar threads

Undergrad Solutions that break the Lorentz invariance...?
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Topological phase transitions for the whole Universe...?
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Are there non-smooth metrics for spacetime (without singularities)?
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Models where all symmetries would be approximate?
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad No symmetries in the Universe at the Big Bang...?
  • · Replies 12 ·
Replies
12
Views
3K
Undergrad What does it mean that symmetries do not hold globally?
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad No Symmetry Spacetimes/Metrics in Theory of Relativity
  • · Replies 7 ·
Replies
7
Views
2K
Undergrad Non-homogeneous and anisotropic metric and laws of physics...?
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Explore Spacetimes, Metrics & Symmetries in Relativity Theory
  • · Replies 7 ·
Replies
7
Views
3K
Undergrad Consequences of the absence of global symmetries...?
  • · Replies 6 ·
Replies
6
Views
3K