Questions on Quantum Gravity Corrections to Cosmological Entropy

[WatsonWangShuai]

TL;DR

Asking about mainstream frameworks of quantum gravity corrections to cosmic entropy, and published studies comparing these predictions with DESI large-scale structure observations.

Hello everyone,

I’ve recently been reading papers on quantum gravity corrections to Bekenstein-Hawking entropy and their applications in cosmological contexts. I’m particularly interested in how these quantum gravity corrections would affect the entropy evolution of the early universe, and whether there are currently any testable predictions that can be compared with large-scale structure observational data such as DESI.

I’d like to ask two questions:

1. What are the main mainstream frameworks for quantum gravity corrections to cosmic entropy?
2. Are there any published studies that have made systematic comparisons between such theoretical predictions and large-scale structure observations?

Any relevant literature recommendations or insights would be greatly appreciated.

 

[PeterDonis]

Moderator's note: Thread moved to Beyond the Standard Models forum.

 

[PeterDonis]

I’ve recently been reading papers on quantum gravity corrections to Bekenstein-Hawking entropy and their applications in cosmological contexts.

Please give specific references.

I’m particularly interested in how these quantum gravity corrections would affect the entropy evolution of the early universe, and whether there are currently any testable predictions that can be compared with large-scale structure observational data such as DESI.

What do the papers you've read say about this?

What are the main mainstream frameworks for quantum gravity corrections to cosmic entropy?

What do the papers you've read say about this?

Are there any published studies that have made systematic comparisons between such theoretical predictions and large-scale structure observations?

What do the papers you've read say about this?

Any relevant literature recommendations or insights would be greatly appreciated.

It looks like you have already read at least some of the relevant literature. What papers are those?

 

[WatsonWangShuai]

Moderator's note: Thread moved to Beyond the Standard Models forum.

Noted, thank you for moving the thread. I will keep the discussion focused on published papers about entanglement swapping and interpretations of quantum mechanics.

 

[WatsonWangShuai]

Please give specific references.


What do the papers you've read say about this?


What do the papers you've read say about this?


What do the papers you've read say about this?


It looks like you have already read at least some of the relevant literature. What papers are those?

Thank you for the reminder.

Two papers I’ve read are:
1. Ashtekar, A., & Saini, S. (2021). Quantum corrections to the Bekenstein–Hawking entropy in loop quantum gravity. arXiv:2106.09860.
This work computes leading-order quantum geometric corrections to black hole entropy within LQG, showing that the area law receives small logarithmic corrections.
2. Visser, M. (2023). Cosmological entropy bounds and quantum gravity phenomenology. arXiv:2302.08481.
This review discusses entropy bounds for cosmological spacetimes, and explores possible routes to connect quantum gravity entropy corrections with large-scale cosmic observations.

I am curious whether these entropy correction frameworks can be extended to the early universe, and if any testable signatures could be compared with DESI large-scale structure data.

 

[renormalize]

I am curious whether these entropy correction frameworks can be extended to the early universe

A few moments of Google searching finds this recent preprint:
Cosmology with Logarithmic Corrected Horizon Entropy According to the Generalized Entropy and Variable-G Correspondence
It cites many references that may help you answer your question.

 

[WatsonWangShuai]

A few moments of Google searching finds this recent preprint:
Cosmology with Logarithmic Corrected Horizon Entropy According to the Generalized Entropy and Variable-G Correspondence
It cites many references that may help you answer your question.

Thank you very much for the recommendation. This preprint is highly relevant to my question — it applies logarithmic entropy corrections to early cosmology via the GEVAG framework with a varying effective gravitational constant, which looks like a much more thermodynamically consistent approach.I'll read through it carefully. This is really helpful.