Is there some agreement on properties of a theory of quantum gravity?

In summary, it is allowed to discuss specific proposed quantum gravity models at Physics Forums, but general and vague discussions about gravity and space may not be useful. Wikipedia allows some current theoretical work to be published, while viXra allows most ideas to be published but does not review papers. The gravitational field may be the base field according to loop quantum gravity.
  • #1
KurtLudwig
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Do physicists have a list of probable properties and equations which a future theory most likely will contain. Such as: Will quantum gravity be a field? How to make quantum gravity re-normalizeable ?
Having read many times that there is no theory of quantum gravity, yet physicists at Physics Forums must have some ideas of what a theory of quantum gravity will contain.
Is it allowed to discuss these questions at Physics Forums? Wikipedia does allow some current theoretical work to be published, such as string theories and loop quantum gravity and some others. Wikipedia does not allow any personal ideas to be published. viXra allows most ideas to be published, but does not review any papers, with the result that these papers will most likely not be read by anyone.
It seems reasonable to posit that gravity is a field? All the other forces arise out of fields and interact with each other.
It seems reasonable to posit that space is granular? This would prevent infinities from arising.
The gravitational field may be the base field, as posited by loop quantum gravity.
 
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  • #2
KurtLudwig said:
Is it allowed to discuss these questions at Physics Forums?

Specific proposed quantum gravity models ("proposed" meaning "appears in an actual paper in the literature, which you should provide a link to") can be discussed in the Beyond the Standard Model forum.

Other discussions are too general and vague to be useful. For example:

KurtLudwig said:
It seems reasonable to posit that gravity is a field?

Ok, now go look at the literature and see how many different versions of "gravity is a field" there are. You need to focus discussion on something more specific than that.

KurtLudwig said:
It seems reasonable to posit that space is granular?

Ok, now go look at the literature and see how many different versions of "space is granular" there are...
 
  • #3
The previous response describes the appropriate ground rules for future threads. This thread is closed.
 

1. What is quantum gravity?

Quantum gravity is a theoretical framework that aims to reconcile the principles of quantum mechanics (which govern the behavior of particles at the subatomic level) with the principles of general relativity (which describe the behavior of large-scale objects in the universe).

2. Why is a theory of quantum gravity important?

A theory of quantum gravity is important because it would provide a more complete understanding of the fundamental laws of the universe. It would also help to explain phenomena such as the behavior of black holes and the origin of the universe, which cannot be fully understood within the current frameworks of quantum mechanics and general relativity.

3. What are the main challenges in developing a theory of quantum gravity?

One of the main challenges in developing a theory of quantum gravity is the fact that the principles of quantum mechanics and general relativity seem to contradict each other. Another challenge is that quantum gravity is thought to operate at extremely small scales, making it difficult to test and observe through experiments.

4. Is there any agreement on the properties of a theory of quantum gravity?

There is currently no consensus on the properties of a theory of quantum gravity. Different approaches, such as string theory, loop quantum gravity, and causal dynamical triangulations, have been proposed, but none have been proven to be the definitive theory of quantum gravity.

5. How close are we to finding a theory of quantum gravity?

It is difficult to say how close we are to finding a theory of quantum gravity. Some physicists believe that we may be on the brink of a breakthrough, while others believe that it may still be many years away. It is a complex and ongoing area of research, and there is still much to be discovered and understood before a definitive theory can be established.

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