Rudy Vaas 3 article series on Quantum Gravity

[marcus]

http://arxiv.org/physics/0401128

Beyond Space And Time
Ruediger Vaas
7 pages, English translation by Amitabha Sen of the German article "Jenseits von Raum und Zeit"

http://arxiv.org/physics/0403112

The Duel: Strings versus Loops
Ruediger Vaas
10 pages, English translation by Martin Bojowald and Amitabha Sen
of "Das Duell: Strings gegen Schleifen"

http://arxiv.org/physics/0407071

The Inverted Big-Bang
Ruediger Vaas
8 pages, English translation by Amitabha Sen
of "Der umgestuelpte Urknall"

more accurate translation would be
"the turned-inside-out Big Bang"
in Loop Quantum Cosmology the volume element gets
turned inside out at the moment of the quantum bounce
where there used to be a singularity
and where constraction stopped and expansion began
the turning inside out of volume is mysterious and may
IMHO have something to do with thermodynamics

German-speakers say Big Bang slightly different from in english
Ur means primordial, or primal--the Ancestral One--ultimately ancient:
Ur knall
primordial bang



*

 

[sol2]

http://arxiv.org/physics/0401128

Beyond Space And Time
Ruediger Vaas
7 pages, English translation by Amitabha Sen of the German article "Jenseits von Raum und Zeit"

http://arxiv.org/physics/0403112

The acid test of quantum geometry however takes place at the other extreme: in the description of the big bang and black holes. "Quantum geometry is matured enough now that it can directly address these problems," Ashtekar is pleased to note. "Quantum physics does not stop at the big bang, he is convinced. "The classical spactime dissolves near the big bang, but the spin network is still there. It is to a certain extent eternal. "There was thus no emergence of the universe from nothing , because nothing simply does not exist. There was always something already." In this manner quantum geometry has the philosophical advantage of simply getting rid of apparently unsolvable questions. Here its strength of being independent from a background spacetime metric becomes particularly noticeable. "Matter and geometry should both be born together quantum mechanically."

http://arxiv.org/physics/0403112

Thanks for the links Marcus.

 

[marcus]

Hey people, a nice language thing!

Stuelpe means cuff like on your shift

if you turn your cuff inside out, that means roll it back
on itself, then it is

umgestuelpte

it is a different cuff style

oh, like on pants too: turned up cuffs versus plain cuffs.

My neighbor the German told me about this today.

So in Loop Quantum Cosmology the universe turns inside out
at the big bang (non-)singularity

it collapses on itself but by quantum good luck it does not crunch
it just turns inside out and begins expanding

the volume element is everted at the moment of bounce
negative volumes become positive and viceversa

do you think Bojowald wanted this to happen?
dont be ridiculous he is just this North German guy
he is not that imaginative

It came out of the Loop gravity theory that there is a non-singularity
where the universe becomes for just a brief moment classically indescribable and turns inside out and starts re-expanding

and then soon everything is classical again and the usual
Friedmann and Einstein equations take charge

So that is what

DER UMGESTUELPTE URKNALL
means
and it does sound better in german than
"the Turned-Inside-Out Big Bang"

Also, why have US magazines not picked up on this the way
Bild der Wissenschaft has picked up on it.
Maybe because US science journalists are all Wusses
and Wimp conformists. Vaas has some backbone.

 

[marcus]

On friday, in a week, Roger Penrose will talk at the GR17

Listen to what he has to say about entropy at the time of big bang.

(he already gave the Fashion Faith Fantasy talk at princeton and it
can be heard streaming online. I have the link somewhere)

his talk has a lot about quantum gravity because that is the main thing that is happening in physics now

and he says Second Law
and he says that a uniform distribution of matter is very high positive entropy (release the gas into a large container and it spreads out uniform)

and he says that a uniform gravitational field is very low entropy

it just naturally starts to wrinkle. a uniform gravitational field is an example of pure and rare virginity, think of all the falling that would be possible if everything were uniformly distributed as far apart from everything else as it could be. think of all the gravity wells that have yet to form!

Penrose says that the initial state of the universe has very low entropy (very large negative entropy) because the uniformity of gravity overwhelms the uniformity of matter---gravity uniformity is more important.

I'm telling you this from memory. I haven't got a transcript. I will he would get his book out about this (the talk in Dublin is aparently a teaser for a book he is writing)

Does this sound cockeyed. Well listen to the princeton talks yourself. i will get the links. Here is the main link
http://www.princeton.edu/WebMedia/lectures/
(you go down the menu to December 2003 and Penrose)

Basically he is drawing conclusions from the second law of thermodynamics, which is still a sound bet after all these years. he tells an Eddington story about that.