Incorporating 3 Forces Into Relativity: Is It Possible?

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Discussion Overview

The discussion revolves around the possibility of incorporating the three fundamental forces (strong nuclear force and electroweak force) into the framework of relativity, as opposed to the more common approach of quantizing gravity. Participants explore the implications of this idea, particularly in relation to Planck-scale physics and the necessity of quantizing gravity.

Discussion Character

  • Debate/contested
  • Conceptual clarification
  • Technical explanation

Main Points Raised

  • Some participants propose that instead of quantizing gravity, it may be possible to incorporate the other three forces into relativity.
  • Others argue that quantizing gravity is essential for understanding fundamental concepts of the universe, including the origins of the universe and Planck-scale physics.
  • A participant references a paper titled 'Quantizing Geometry or Geometrizing the Quantum?' as an approach related to the discussion.
  • Questions are raised about the necessity of quantizing gravity for understanding Planck-scale physics, with some suggesting that a theory of gravity without singularities might suffice.
  • There is speculation about whether quantization is the only method to achieve behavior that avoids singularities at short distances.
  • One participant notes that a theory without singularities at the Planck scale would ultimately be a theory of quantum gravity.

Areas of Agreement / Disagreement

Participants express differing views on the necessity of quantizing gravity, with some asserting its importance while others question whether it is the only viable approach. The discussion remains unresolved regarding the best way to address the integration of forces and gravity.

Contextual Notes

There are limitations in the discussion regarding assumptions about the nature of gravity and the forces involved, as well as the definitions of singularities and quantization. The implications of Planck-scale physics are also not fully explored.

Jonnyb42
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Has it been considered to instead of quantizing gravity, and incorporating gravity into the quantum theory, but rather incorporating the other three forces into relativity?
 
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All of the other forces namely, The Strong Nuclear force and Electroweak force are quantized into and described by Quantum Field Theories: SU(3)xSU(2)xU(1) (The Standard Model). A Quantum Field Theory is a combination of Quantum Mechanics and Special Relativity. Regardless of that point quantizing gravity is necessary to understand the fundamental ideas of the Universe such as where the Universe came from and Planck Scale Physics in which the Energy Levels require that gravity be incorporated. Your approach doesn't address those ideas which are necessary.
 
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There's this paper, 'Quantizing Geometry or Geometrizing the Quantum?', which follows an approach somewhat along these lines: http://arxiv.org/abs/1004.2879
 
Kevin_Axion said:
Regardless of that point quantizing gravity is necessary to understand the fundamental ideas of the Universe such as where the Universe came from and Planck Scale Physics in which the Energy Levels require that gravity be incorporated. Your approach doesn't address those ideas which are necessary.

Why is quantization of gravity necessary to understand Planck-scale physics?

Don't we just need a theory of gravity that doesn't have singularities at that level?

I suppose that implies that there is some sort of short-distance cutoff where the gravity equations stop acting like a [tex]1/r^2[/tex] force. But is quantization the only method that will generate this behavior?
 
inflector said:
Why is quantization of gravity necessary to understand Planck-scale physics?

Don't we just need a theory of gravity that doesn't have singularities at that level?

I suppose that implies that there is some sort of short-distance cutoff where the gravity equations stop acting like a [tex]1/r^2[/tex] force. But is quantization the only method that will generate this behavior?

It is so described in the first paragraph: http://en.wikipedia.org/wiki/Planck_scale

And a theory without singularities at Planck Scale is ultimately a theory of quantum gravity.
 

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