Godel's rotating universe theory

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Godel's rotating universe, discovered in 1949, is a solution to Einstein's Field Equations that introduces the concept of closed timelike curves, allowing for the possibility of time travel to the past. This metric is considered unphysical due to its implications. The terminology around "rotating" is debated; some argue it refers to circular time loops rather than a universe rotating around a fixed axis. The discussion also touches on the concept of seeing oneself in the past if time travel were possible. Additionally, there is interest in the "Compass of the Inertia," mentioned in Godel's original article, which is a topic of inquiry among participants.
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can someone please explain to me this theory of kurt godel?

thanks.
 
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"Godel's rotating universe", also called "Godel's Universe",
is a solution that godel found in 1949 to the Einstein Field Equations
In this universe, the metric is unphysical, because there exist something called closed timelike curves.
If you enter in some of these timelike curves, you can return to the past.
 
Originally posted by meteor
"Godel's rotating universe", also called "Godel's Universe",
is a solution that godel found in 1949 to the Einstein Field Equations
In this universe, the metric is unphysical, because there exist something called closed timelike curves.
If you enter in some of these timelike curves, you can return to the past.

I would not call that 'rotating' but merely a circular or closed time loop instead.
Rotating seems to mean that the universe itself rotates around some fix axis, which is probably not what is being meant.
 
I think it meant rptating space.
 
IF YOU CAN TRAVEL IN THIS UNIVERSE BACK IN TIME CAN YOU SEE YOURSELF IN THE PAST ?
Does anyone know what is the Compass of the Inertia ? It is in the Godel's article .
"An Example of a New Type of Cosmological Solutions of Einstein's Field Equations of Gravitation",Reviews of Modern Physics vol: 21 July,1949 Pages:447-450
Many Thanks
HGW
 

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