Undergrad Current progress in quantum gravity?

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Current discussions on quantum gravity highlight the difficulty in finding comprehensive review papers on recent developments beyond loop quantum gravity. The status of loop quantum gravity remains contentious, with some researchers questioning its predictive power. A leading researcher suggests focusing on three key observational evidences to guide future research: abandoning Lorentz invariance-violating theories, supergravity, and the anti-deSitter/conformal field theory relationship. For those seeking an overview, a recommended talk by Hermann Nicolai may provide valuable insights. The conversation emphasizes the need for clarity and direction in the ongoing exploration of quantum gravity.
Haorong Wu
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Where can I find a review of the current progress in quantum gravity?
Hi, there. I am interested in quantum gravity. But I am not sure how to find review papers about its recent developments. I tried "quantum gravity" on google scholar. But I could not find a suitable review other than that about loop quantum gravity. I am not sure what are the other approaches to this problem and I am looking for papers covering them.

BTW, I have heard loop quantum gravity several years ago. In my memory, this theory seemed not to give any new predictions and is questionable. What is its status now in the physics community?

Thanks.
 
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Haorong Wu said:
Summary:: Where can I find a review of the current progress in quantum gravity?

I am interested in quantum gravity. But I am not sure how to find review papers about its recent developments.
Have you already read this current thread in the BTSM forum?

ohwilleke said:
Summary:: One of the leading researchers in Loop Quantum Gravity discusses existing observations that should guide future quantum gravity research in a three page paper.

Rovelli points to three pieces of existing observational evidence that should guide future quantum gravity research. Bottom line:

* abandon Lorentz invariance violating quantum gravity theories,
* abandon supergravity and string theory,
and
* stop working on the anti-deSitter/conformal field theory relationship in gravity and cosmology work (leave it to the condensed matter physicists who have legitimate uses for it).

<<SNIP>>
 
Moderator's note: Thread moved to Beyond the Standard Model forum.
 
Thanks, guys. I will check all those information.
 

Thread 'Questioning the timescape model'

"Supernovae evidence for foundational change to cosmological models" https://arxiv.org/pdf/2412.15143 The paper claims: We compare the standard homogeneous cosmological model, i.e., spatially flat ΛCDM, and the timescape cosmology which invokes backreaction of inhomogeneities. Timescape, while statistically homogeneous and isotropic, departs from average Friedmann-Lemaître-Robertson-Walker evolution, and replaces dark energy by kinetic gravitational energy and its gradients, in explaining...
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