# Does the universe rotate

1. Sep 12, 2005

### wolram

http://arxiv.org/abs/astro-ph/0509230

Authors: George Chapline (Lawrence Livermore National Laboratory), Pawel O. Mazur (University of South Carolina)
Comments: 5 pages, LaTeX file, 1 figure

Understanding gravitational collapse requires understanding how $\sim 10^{58}$ nucleons can be destroyed in $\sim 10^{-5}$ seconds. The recent proposal that the endpoint of gravitational collapse can be a "dark energy star" implies that the mass-energy of the nucleons undergoing gravitational collapse can be converted to vacuum energy when one gets near to conditions where classical general relativity predicts that a trapped surface would form. The negative pressure associated with a large vacuum energy prevents an event horizon from forming, thus resolving the long-standing puzzle as to why gravitational collapse always leads to an explosion. An indirect consequence is that the reverse process - creation of matter from vacuum energy - should also be possible. Indeed this process may be responsible for the "big bang". In this new cosmology the observable universe began as a fluctuation in an overall steady state universe. The fluctuations in the CMB in this picture are the result of quantum turbulence associated with vorticity. This explanation for the CMB fluctuations is superior to inflationary scenarios because there is a natural explanation for both the level of CMB fluctuations and the deviation from a scale invariant spectrum at large scales.

2. Sep 12, 2005

### Garth

Interesting paper - thank you for the link.

No Inflation, finite size of universe ~ 10 Gpc. (SCC ~ 15 Gpc) - I like it!

But as a Machian my question in response to the title of this Thread is always: "If the universe did rotate what would it rotate with respect to?"

Garth

3. Sep 12, 2005

### wolram

In a rotating universe, would every," body", with in it have more energy as
compared to a no rotating universe ?

4. Sep 12, 2005

### Garth

How would you first define and then measure such energy and how would you compare the 'rotating' with the 'non-rotating'?

Garth

5. Sep 12, 2005

### bayan

Is that the size of the universe?

if so what unit is ir?

cheers

6. Sep 12, 2005

### JesseM

Do you consider general relativity to be a Machian theory? Some do, others don't...but GR does allow for the possibility of rotating universes, with the rotation having some experimentally observable consequences--see the "Is our Universe Rotating?" section of this article on rotating universes. The evidence so far suggests our universe is not rotating to any significant degree. The article also mentions that "rotation" in this context doesn't mean there'd be a single center of rotation:

7. Sep 12, 2005

### Garth

It is generally acknowledged that GR is not a completely Machian theory, the fact that it can have rotating cosmological solutions being just one symptom of that. The example of the laboratory quoted above does not answer my question as a freely falling (orbiting) inertial laboratory itself may be rotating wrt the rest of the universe, because of the frame dragging gravito-magnetic effect, in other words it could be close to a large rotating mass such as the Earth.

Garth

8. Sep 13, 2005

### Chronos

Bah, Garth. The universe cannot 'rotate' without something outside the universe for it to rotate with respect to. That is way too Machian, even for Mach to consider, IMO. I prefer your BD solution.

Last edited: Sep 14, 2005
9. Sep 13, 2005

### Garth

Bah Chronos!!
Is the Universe rotating?
(Emphasis mine)
This postulated rotation proved to be a Faraday rotation effect caused by our Galaxy's ISM magnetic and electric fields.

Mach's Principle and the Creation of Matter
Actually GR can explain this coincidence in a closed universe. It is the boundary conditions problem again - one of the reasons Einstein preferred a closed universe.

Garth

10. Dec 15, 2011

### reggnar

Ive been trying to figure this out for awhile if "the universe" does rotate alone. However what i do know the universe moves relative to light itself at 2.8 angstroms per second per second (2.8*10 -10 power. About the diameter of a air molecule). The Fg on earth is caused by the speed of the expanding universe ( i think its hubbles law), the current speed of our universe 2.8 angstoms per second per second equalivant to "c" and to the location of earth in the universe and its rotation. This is in very very simple words a book i can reference you to is "the new gravity" by kenneth g. Salem. He explains it in detail, this is his work corrected and perfected. I have his 1st edition signed copy.

But what do i know im only 16.