Introducing Loop Quantum Gravity: Differences with String Theory

[marcus]

I wrote a little introduction on LQG because i have seen that many people ask similar questions on this topic...anyone that is interested can read it in my journal...

regards
marlon
corrections are always welcome...

marlon,

that is a really good use of the PF Journal resource. it makes me think that I should write an essay on something in my journal, or assemble some information.

you put real thought----including your intuition as a particle physicist---into your essay.

I hope that it was not only for other people but that it also was valuable for you---you worked on it and thought through what happens step by step in building LQG. thanks for a good contribution.

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there are some non-standard English expressions. Actually I like european or germanic-style English quite a lot. sometimes it sounds better or more interesting than standard does.

I will mention only one. the word "fundament"

It is a very well established fact that gravitation and quantummechanics both have totally different fundaments, which makes it very difficult to unify them at “first sight”.

In English the word "fundamental" can be either adjective or noun.

Adjective: "harmonic analysis is fundamental to this theory"

Noun: "the two theories are based on different foundations."
"the two theories have different fundamentals"

But one does not say "the two theories have different fundaments"

It sounds slightly wrong, although interesting.

Actually instead of criticizing I should compliment you on your writing, because you do a fundamentally good job at explaining the fundamentals of Loop Quantum Gravity!

 

[marlon]

Marcus as always i need to thank you for instructing me...
please feel free to make more comments on the text, this is the best way to learn it and gradually move on to more advanced material. I prefer to have a simple and clear understanding of what i want to learn before to move on to more "exotic" texts (which i want to write to here in the near future...). This is the way i learned QFT in college and this is the best way to understand LQG...

thanks again and regards

marlon