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Unredeemed

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Unredeemed

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Thanks.

- #2

Coin

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What I recommend is trying to find Carlo Rovelli's "Quantum Gravity" textbook, or trying to read Lee Smolin's old Arxiv postings (See here or here or here, maybe?) There is unfortunately not one canonical introduction to LQG (though Rovelli's book maybe comes close?) but if you read a few papers on the subject you'll probably get the general direction.

It will help to know some differential geometry, and [URL='https://www.physicsforums.com/insights/author/john-baez/']John Baez[/url]'s "this week in mathematical physics" series contains a lot of good information about the background math. (Baez also wrote a book on the loop formalism and there's stuff about spin networks and spinfoams littered all over his website.)

- #3

nrqed

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It depends on your background. Do you have a solid background in QFT?

- #4

ccdantas

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I hope this helps, but it will depend on your background:

http://egregium.wordpress.com/2008/01/17/list-of-books-on-quantum-gravity-and-other-helpful-tips/ [Broken]

http://egregium.wordpress.com/2008/01/17/list-of-books-on-quantum-gravity-and-other-helpful-tips/ [Broken]

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- #5

nrqed

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Check out this recent thread for many online lectures

https://www.physicsforums.com/showthread.php?t=214242

- #6

shoehorn

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A more comprehensive book is Thiemann's

My personal favourites are the following three:

- Baez & Muniain,
*Gauge Theories, Knots, and Gravity*; - Ashtekar,
*Lectures on Nonperturbative Canonical Gravity*; - Kiefer,
*Quantum Gravity*.

Of the three, Baez & Muniain is certainly the most readable. If you're familiar with Baez's

Ashtekar's book is pitched at a considerably higher level. In particular, he dives straight into a discussion of the new variables, so if you're not familiar with this material you'll need to learn this first. Still, it's a book that everyone who works in the area has/should have.

Kiefer's book is my personal favourite. It's not restricted solely to LQG (although his discussion of this

Hope that's of help.

- #7

nrqed

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In case you're interested in something a bit more substantial than online lectures you might find the following of help. Rovelli's book is a good read, dealing, as it does, with many of the basic topics. It should be noted, however, that it's philosophical in nature, and most certainly isn't a textbook. I also have severe disagreements with several points he raises in the book (indeed, he makes more than a few claims which are patently false)...

I'd be interested in hearing more about what he says that is false.

- #8

shoehorn

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I'd be interested in hearing more about what he says that is false.

Pretty much his whole line of thinking about Kretschmann's objection to general covariance is shaky, as is his discussion of the nature of time in relation to the substantivalist/relationist debate about the structure of spacetime. Those are two rather fundamental issues off the top of my head.

His treatment of the problem of time in canonical QG is also particularly weak. It certainly pales in comparison to the early work of Isham, Kuchar, and others.

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