Template talk:Quantum gravity
In today's world, Template talk:Quantum gravity is a topic that has captured the attention of millions of people around the world. Since its appearance, it has generated debate, controversy and a profound impact on modern society. Its relevance transcends all types of borders and has positioned itself as a topic of general interest on the public agenda. As Template talk:Quantum gravity continues to evolve and take on new dimensions, it is important to closely analyze each of its aspects to understand its meaning and impact on our environment. In this article, we will explore different perspectives on Template talk:Quantum gravity and its influence in various areas of everyday life, with the aim of shedding light on this topic and fostering an informed and enriching debate.
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quadratic gravity
I notice Quadratic gravity (QQG) is in the string theory section of this template. But from what I can tell, it's a modification of classical GR that makes a quantized version renormalizeable. That's based on the Quanta Magazine article that I found it through. So I think it might be in the wrong part of the template, or alternatively, that there's a connection between QQG and string theory that should be described in the QQG article. I'm not knowledgeable about this stuff enough to mess with the article or the template myself, but maybe someone can look into it. ~2025-35496-27 (talk) 02:41, 22 November 2025 (UTC)
- I agree that this is not a string theory. For example, this paper
- Alvarez‐Gaume, L., Kehagias, A., Kounnas, C., Lüst, D., & Riotto, A. (2016). Aspects of quadratic gravity. Fortschritte der Physik, 64(2-3), 176-189.
- says
Finally, we discuss how quadratic actions may be obtained from a fundamental theory like string- or M theory.
- However, I don't think Quadratic gravity is in fact a quantum theory. The same source says
We have studied here quadratic curvature gravity theories. Such theories have attracted considerable attention, among others things, due to their renormalization properties. In particular, they offer the interesting possibility of yielding a well defined quantum theory, which in addition, reduces to general relativity at long distances.
- I suggest a follow up on Talk:quadratic gravity Johnjbarton (talk) 03:09, 22 November 2025 (UTC)