What are the branches of Quantum Theory?

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Discussion Overview

The discussion revolves around the categorization of various branches of Quantum Theory, including Quantum Field Theory (QFT), the Standard Model, Quantum Mechanics, and other related fields such as atomic physics, solid state physics, Quantum Gravity, and Quantum Information. Participants explore whether these areas can be classified under the umbrella of Quantum Theory.

Discussion Character

  • Exploratory
  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • Some participants propose that QFT, the Standard Model, and Quantum Mechanics are key branches of Quantum Theory, while questioning the inclusion of atomic physics and solid state physics.
  • Others suggest that Quantum Gravity and Quantum Information could also be categorized under Quantum Theory, though there is uncertainty about their status.
  • One participant mentions Quantum Electrodynamics (QED) and Quantum Chromodynamics (QCD) but expresses uncertainty about how these theories interconnect.
  • There is a suggestion that Loop Quantum Gravity is a potential candidate for a quantum gravity theory, but it is noted that no complete theory currently exists.
  • Some participants question whether these theories should be accepted as part of Quantum Theory, considering the term "theory" implies a level of uncertainty.
  • A later reply asserts that a quantum theory is defined as any theory utilizing quantum physics, thus including all mentioned theories.
  • It is noted that QED and QCD are widely accepted in the scientific community, with QED being highlighted as highly experimentally confirmed.
  • In contrast, the theories related to quantum gravity are described as unconfirmed.

Areas of Agreement / Disagreement

Participants express differing views on what should be included under Quantum Theory, with some areas of agreement on the acceptance of QED and QCD, while the status of Quantum Gravity and other theories remains contested.

Contextual Notes

There are unresolved questions regarding the definitions and interconnections of the various theories mentioned, as well as the criteria for categorization under Quantum Theory.

Emilie.Jung
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What are the branches that we can say are categorized under [Quantum Theory](http://en.wikipedia.org/wiki/Quantum_theory)? I am thinking they are QFT, Standard Model and Quantum Mechanics. How about atomic physics and Solid state physics? Also how about Quantum Gravity and Quantum Information? Can they be also categorized there?
 
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Why not? I'm going to ask some people on that. I would also like to know that. But I don't see why not. But don't take my word for any thing. I'll see what Nuggatory has to say about this, If he'll respond that is.
 
There are also Quantum electrodynamics and chromodynamics (QED and QCD) but I'm not positive how they all link together. Loop quantum gravity seems to be likeliest contender but there is no complete quantum gravity theory that I am aware of.
 
jerromyjon said:
There are also Quantum electrodynamics and chromodynamics (QED and QCD) but I'm not positive how they all link together. Loop quantum gravity seems to be likeliest contender but there is no complete quantum gravity theory that I am aware of.
Are the theories accepted in the science community?
 
Should the theories be accepted to be categorized under Quantum Theory? Can't they only be theories as the name of the huge title suggests? @CrackerMcGinger
 
A quantum theory is any theory that makes use of quantum physics, so all those mentioned above are quantum theories.
 
CrackerMcGinger said:
Are the theories accepted in the science community?

QED and QCD certainly are. QED might be the most experimentally confirmed theory ever.
 
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Only the quantum gravity theories are unconfirmed.
 

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