Are static models totally static?

[Lino]

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.

 

[jedishrfu]

Static doesn't mean no movement. Everything is moving and react to gravitation and quantum effects. No big bang, no expansion, just there.

 

[Lino]

Thanks Jedisshrfu. That's what I figured, but couldn't find confirmation in any of the literature.

Regards,

Noel.

 

[jedishrfu]

Wikipedia has some good info on the model:

http://en.wikipedia.org/wiki/Static_universe

 

[Lino]

Thanks jedishrfu.

Regards,

Noel.

 

[skydivephil]

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.

 

[Lino]

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.