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I'm wondering if Quantum Gravity is expected to be a Theory Of Everything (TOE)? Can we expect that if we combine QFT with GR to get Quantum Gravity, will that be a TOE that explains GR and QFT?
i thought string theory can rederive GR on its own?friend said:It seems to me that any development of a theory assuming QFT and GR are true will not enable us to then derive either QFT or GR. We might be able to answer some questions about black holes and big bangs. But we still won't know why the universe is quantum mechanical or general relativistic. So what should we expect to find out with LQG or Stringtheory?
Causal fermion systemblack hole 123 said:i thought string theory can rederive GR on its own?
Quantum gravity is a theoretical framework that aims to unify the theories of quantum mechanics and general relativity. It is a branch of theoretical physics that attempts to describe the behavior of gravity at the quantum level.
The unification of quantum mechanics and general relativity is considered one of the biggest unsolved problems in modern physics. Quantum gravity is important because it could potentially provide a complete understanding of the fundamental laws of nature and help us better understand the universe.
Currently, there is no consensus among scientists on whether quantum gravity can be considered a TOE. While it aims to unify two fundamental theories, there are still many unresolved issues and it is still a highly speculative area of research.
Since quantum gravity is a theoretical framework, scientists study it through mathematical models and simulations. They also use data from experiments and observations to test the predictions of different quantum gravity theories.
There are several proposed solutions to quantum gravity, including string theory, loop quantum gravity, and asymptotic safety. However, none of these have been definitively proven and the search for a complete understanding of quantum gravity is still ongoing.