- #1

- 398

- 88

- TL;DR Summary
- In some papers, the gravitational field is canonically quantized. Does this lead to quantum gravity?

(I am not sure which forum this post belongs to. Hope someone kindly helps me move it to a proper forum.)

In papers, for example, here, here, and here, the authors start from the Lagrangian for matters and gravitational fields, then Dirac's constrained canonical quantization is used. They achieve annihilation and creation operators for gravitational perturbation.

I am not familiar with quantum gravity theories. I know there are several competing candidates, including String theory and LQG. These theories face different problems. Does this kind of canonical quantization belong to some of them, or it does not correspond to quantum gravity?

Thanks.

In papers, for example, here, here, and here, the authors start from the Lagrangian for matters and gravitational fields, then Dirac's constrained canonical quantization is used. They achieve annihilation and creation operators for gravitational perturbation.

I am not familiar with quantum gravity theories. I know there are several competing candidates, including String theory and LQG. These theories face different problems. Does this kind of canonical quantization belong to some of them, or it does not correspond to quantum gravity?

Thanks.