Are static models totally static?

  • Context: Undergrad 
  • Thread starter Thread starter Lino
  • Start date Start date
  • Tags Tags
    Models Static
Click For Summary

Discussion Overview

The discussion revolves around the nature of static models in cosmology, particularly questioning the extent to which these models can be considered truly static. Participants explore the implications of movement and evolution within static frameworks, referencing various models and their characteristics.

Discussion Character

  • Exploratory
  • Debate/contested
  • Technical explanation

Main Points Raised

  • Noel questions whether static models allow for any form of evolution, citing examples like colliding galaxies and collapsing dust clouds.
  • Some participants assert that "static" does not imply a lack of movement, noting that everything is in motion due to gravitational and quantum effects.
  • There is mention of different types of static models, including discredited steady state models and more modern variations, suggesting that some models accommodate observations of an expanding universe.
  • Noel expresses difficulty in finding literature that clarifies the concept of static models, indicating a belief that they are not entirely unchanging.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the definition and implications of static models, with multiple competing views regarding their characteristics and the extent of movement allowed within them.

Contextual Notes

There are references to various static models and their interpretations, but the discussion lacks clarity on specific definitions and assumptions underlying the term "static." Some models mentioned may have different implications for movement and evolution.

Lino
Messages
309
Reaction score
4
Hi, I appreciate the basics if static models, but I'm wondering just how static they are. I understand there is no expansion, but is there any element of evolution? (For example, colliding galaxies, collapsing dust clouds, etc.)

Regards,

Noel.
 
Space news on Phys.org
Static doesn't mean no movement. Everything is moving and react to gravitation and quantum effects. No big bang, no expansion, just there.
 
Thanks Jedisshrfu. That's what I figured, but couldn't find confirmation in any of the literature.

Regards,

Noel.
 
Thanks jedishrfu.

Regards,

Noel.
 
What static model are you referring to? There are steady state models such as Hoyles (now discredited model) and more mdoern steady sate models such as steady state eternal inflation. A new static model was pubslihsed a few months ago:
http://arxiv.org/abs/1205.5550
but I believe all of these models allow for observations of an expanding universe and galaxies colliding etc but perhaps that's now what you are referring to.
 
Thanks for the reply skydivephil. A lot of the arxiv items that I have read lately refer simply "static models" in various contexts. I was pretty sure that this (generally) did not mean completely unchanging ... but I could not find any clarification.

Regards,

Noel.
 

Similar threads

  • · Replies 19 ·
Replies
19
Views
4K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 6 ·
Replies
6
Views
3K
  • · Replies 6 ·
Replies
6
Views
2K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 17 ·
Replies
17
Views
2K
  • · Replies 4 ·
Replies
4
Views
3K
  • · Replies 55 ·
2
Replies
55
Views
21K
  • · Replies 14 ·
Replies
14
Views
2K
  • · Replies 33 ·
2
Replies
33
Views
4K