What Are the Key Insights from Goerlich's Slides on Causal Triangulations?

  • Thread starter Thread starter marcus
  • Start date Start date
marcus
Science Advisor
Homework Helper
Gold Member
Dearly Missed
Messages
24,753
Reaction score
794
Causal Triangulations coaching---in case anyone wants, or can help with, explanation

This thread has a tight focus. Goerlich's slides

http://echo.maths.nottingham.ac.uk/qg/wiki/images/1/1e/GoerlichAndrzej1214824381.pdf

The slides cover the essentials of CDT in a brief dry way. They assume you already know the motivation and understand the goal of formulating a quantum dynamical continuum---quantizing General Relativity.

By leaving out the motivation, Goerlich gets to be very no-frills concise.
I think his slide-set is as complete as you can be in just 49 slides.

If anyone has been reading through the slides and wants to discuss some part of them, we could do that. If anyone wants some place in the sequence explained, we could try.

Why focus on these slides? Well in general if you want to understand CDT, the most basic place to start is the Loll SciAm article, July 2008. I have the link to it in my signature. And then there is the Quantum Gravity on Your Desktop article http://arxiv.org/abs/0711.0273 which is very good too. QGoYD is clear and highly accessible. But it doesn't give humdrum proceedural details. Like how is the Monte Carlo run actually constructed and what are the Alexander moves used to shuffle the simplexes and randomize how they are glued together?

Goerlich gets down to this level of detail, that one could easily be curious about.
The CDT approach is both relatively successful and remarkably simple, it doesn't have very many details, when you come right down to it. So a brief slide show can actually cover a lot of them.
(there is also an older 2001 Loll preprint that treats the nittygritty in more detail, but Goerlich slides are condensed and may be sufficient.)
 
Last edited by a moderator:
Thread 'LQG Legend Writes Paper Claiming GR Explains Dark Matter Phenomena'
A new group of investigators are attempting something similar to Deur's work, which seeks to explain dark matter phenomena with general relativity corrections to Newtonian gravity is systems like galaxies. Deur's most similar publication to this one along these lines was: One thing that makes this new paper notable is that the corresponding author is Giorgio Immirzi, the person after whom the somewhat mysterious Immirzi parameter of Loop Quantum Gravity is named. I will be reviewing the...
I seem to notice a buildup of papers like this: Detecting single gravitons with quantum sensing. (OK, old one.) Toward graviton detection via photon-graviton quantum state conversion Is this akin to “we’re soon gonna put string theory to the test”, or are these legit? Mind, I’m not expecting anyone to read the papers and explain them to me, but if one of you educated people already have an opinion I’d like to hear it. If not please ignore me. EDIT: I strongly suspect it’s bunk but...

Similar threads

Replies
3
Views
4K
Replies
4
Views
3K
Replies
1
Views
3K
Back
Top