What topics in Quantum Gravity don't require QFT or string theory?

In summary, the conversation discusses the concept of quantum effects involving gravitation, specifically in the context of Newtonian gravity and GR. The speaker clarifies that they are not referring to a full quantization of GR, but rather smaller quantum effects like gravitational neutron interference and the Einstein Box thought experiment. The expert suggests starting a new thread for further discussion on specific references related to these quantum effects.
  • #1
andresB
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Full quantization of gravity is a big issue, but that's not what I'm asking here.
I'm asking about quantum effects that involve any form of gravitation (Newtonian or GR) but that don't require a full quantization of GR or anything like that. Things like gravitational neutron interference or the Einsten Box thought experiment.
 
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  • #2
andresB said:
I'm asking about quantum effects that involve any form of gravitation (Newtonian or GR)

Newtonian gravity and GR are classical theories; by definition they ignore any quantum effects.

andresB said:
that don't require a full quantization of GR or anything like that.

You seem to be asking for quantum effects that don't require a quantum treatment. That makes no sense.

andresB said:
Things like gravitational neutron interference or the Einsten Box thought experiment.

If you can find specific references about these things, you can start a new thread asking about those references. This thread is closed.
 

FAQ: What topics in Quantum Gravity don't require QFT or string theory?

1. What is Quantum Gravity?

Quantum Gravity is a theoretical framework that attempts to reconcile the principles of quantum mechanics and general relativity in order to explain the behavior of matter and energy on a very small scale, such as at the level of subatomic particles.

2. What is the role of QFT in Quantum Gravity?

Quantum Field Theory (QFT) is a mathematical framework used to describe the behavior of quantum particles. It is often used in the study of Quantum Gravity as it allows for the incorporation of quantum mechanics into the theory.

3. How does string theory relate to Quantum Gravity?

String theory is a theoretical framework that attempts to unify the four fundamental forces of nature, including gravity. It is often used in the study of Quantum Gravity as it provides a possible solution to the problem of merging quantum mechanics and general relativity.

4. Are there any topics in Quantum Gravity that do not require QFT or string theory?

Yes, there are alternative theories and approaches to Quantum Gravity that do not rely on QFT or string theory. Some examples include loop quantum gravity, causal dynamical triangulation, and emergent gravity.

5. How close are we to understanding Quantum Gravity?

While there has been significant progress in the field of Quantum Gravity, it is still considered an open problem in physics. Many theories and approaches have been proposed, but a complete and satisfactory understanding of Quantum Gravity has yet to be achieved.

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