Exploring CDT: Quantum Gravity Theory

In summary, CDT has advantages over other theories in that it is mathematically simpler, has a more developed theory of gravity, and has been successful in describing physical reality.
  • #1
moriheru
273
17
Greetings,
I have some questions concerning CDT:
1.Where can I find the newest updates on CDT (causal dynamical triangulation) and newest breakthroughs or aproaches to a theory of quantum gravity(as rare as they may be)?
2. What is a recommendable introduction to CDT (that is mathematical)?
3.What advantages does CDT have? I mean in comparison to say String theory or loop quantum gravity and all the other major theories.

thanks for any help!
 
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  • #2
To reply to your first question, about "newest updates", Renate Loll is a co-author of major CDT papers, as a rule. So one way to find recent papers i..e. "newest updates" is to search for that author:
arXiv:1405.4585 [pdf, other]
Renormalization Group Flow in CDT
J. Ambjorn, A. Goerlich, J. Jurkiewicz, A. Kreienbuehl, R. Loll
Comments: Typos corrected, 21 pages

arXiv:1307.5469 [pdf, other]
De Sitter Universe from Causal Dynamical Triangulations without Preferred Foliation
S. Jordan, R. Loll
Comments: 44 pages, 29 figures

arXiv:1305.6680 [pdf, ps, other]
CDT and the Search for a Theory of Quantum Gravity
J. Ambjorn, A. Goerlich, J. Jurkiewicz, R. Loll
Comments: 23 pages, 5 figures. Based on plenary talk at MG13. To appear in the proceeding

arXiv:1305.4582 [pdf, ps, other]
Causal Dynamical Triangulations without Preferred Foliation
S. Jordan, R. Loll
Comments: 12 pages, 8 figures

arXiv:1302.2173 [pdf, ps, other]
Quantum Gravity via Causal Dynamical Triangulations
J. Ambjorn, A. Goerlich, J. Jurkiewicz, R. Loll
Comments: To appear in "Handbook of Spacetime", Springer Verlag. 31 pages

These are a few recent papers I found just by searching at ARXIV.ORG with the author's name:
http://arxiv.org/find/grp_physics/1/au: Loll/0/1/0/all/0/1

If you click on anyone of the above "arXiv" links you will get the page with the abstract summary of the paper and on that page will be a link to the PDF file. All these papers are free online, so you can browse and find one that fits your needs. You may want an introductory review article to learn from AND a sample of recent papers with the latest results. You should be able to find both sorts.
 
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Likes atyy and moriheru
  • #3
Thanks marcus lots of help, a like is yours!
 

1. What is CDT in quantum gravity theory?

CDT stands for Causal Dynamical Triangulation. It is a mathematical framework used to explore the behavior of space and time in the context of quantum gravity. It involves dividing spacetime into tiny triangles and analyzing how they evolve over time.

2. How does CDT differ from other quantum gravity theories?

CDT is unique in that it allows for a discrete, or chunky, approach to studying spacetime. This is in contrast to other theories, such as string theory, which use a continuous approach. CDT also incorporates the concept of causality, which is important in understanding the relationship between space and time.

3. What is the significance of quantum gravity?

Quantum gravity is a field of study that seeks to unify the theories of general relativity (which describes the behavior of gravity on a large scale) and quantum mechanics (which describes the behavior of matter on a small scale). Understanding quantum gravity is crucial for a complete understanding of the universe and could potentially help resolve some of the biggest mysteries in physics, such as the nature of black holes and the origin of the universe.

4. How is CDT tested or validated?

Currently, CDT is primarily tested through computer simulations. Researchers use computer programs to run simulations of the evolution of spacetime according to CDT, and then compare the results to known physical phenomena. This helps validate the predictions of the theory and refine its parameters.

5. What are some potential applications of CDT in the future?

CDT has the potential to provide insights into a wide range of phenomena, from the behavior of black holes to the early universe. It could also have practical applications in areas such as quantum computing and the development of new materials. However, further research and development is needed before these applications can be fully realized.

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