Can all fundamental forces be fictitious force ?

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Discussion Overview

The discussion explores the possibility of considering all fundamental forces, including the electroweak interaction and the strong interaction, as fictitious forces similar to gravity within the framework of general relativity. It touches on the implications of unifying these forces and the nature of their interactions.

Discussion Character

  • Debate/contested
  • Conceptual clarification
  • Exploratory

Main Points Raised

  • One participant questions whether the electroweak and strong interactions could also be viewed as fictitious forces, suggesting that a final unification of all fundamental forces might require this perspective.
  • Another participant argues that gravity is unique because its force magnitude is proportional to mass, which allows it to be modeled as a fictitious force, unlike the electromagnetic force that depends on charge and mass.
  • A different viewpoint explains that forces involve interactions via fields, and gravity, as described by general relativity, distorts space-time rather than acting through direct particle interactions.
  • Some participants note the ongoing efforts to develop a theory of quantum gravity to place gravity on similar footing with other forces, indicating that a complete theory of everything is still a work in progress.
  • One participant highlights the uniqueness of gravity in that all particles with energy interact gravitationally, while other properties like charge and spin do not affect space-time.

Areas of Agreement / Disagreement

Participants express differing views on whether all fundamental forces can be considered fictitious forces, with no consensus reached on this topic. The discussion remains unresolved regarding the nature of force interactions and the unification of forces.

Contextual Notes

There are limitations in the discussion regarding the assumptions made about the nature of forces and the definitions of fictitious forces. The relationship between energy and gravitational interaction is also not fully explored.

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After reading many questions, , I wonder:

is it possible to consider also the other fundamental forces, the electroweak interaction and the strong interaction or ultimately the unification of these, to be fictitious forces like gravity in the framework of general relativity?

If we want a final unification of all fundamental forces, hasn't this feature of gravity to become a feature of the other forces as well?
 
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Gravity is unique among the four fundamental forces in that the magnitude of the force is proportional to the mass of the object acted on. That's what allows us to model it as a fictitious force in general relativity.

You cannot do the same thing with, for example, the electromagnetic force. Two particles of the same mass will react differently to the same electrical field if they have different electrical charges, and two particles with the same charge will react differently if they have different masses. Only non-fictitious forces can behave that way.
 
A force, as I understand it, involves the interaction of matter particles with each other via a field. An energy quantisation of the field is the force carrying particle of the field.

In the case of gravity though, particles don't interact with one another in this way. General relativity describes how space-time is distorted by energy. So what looked to everyone before Einstein like two orbiting celestial bodies, bound by some long distance force was actually two lumps of energy distorting space-time enough to make their paths through 3D space elliptical.

Yet theorists are still very concerned with "uniting the 4 forces".Is there a reason for this that is understandable to a recent science student like myself?
 
This is a known "problem" with general relativity. There are theorists who are trying to develop a theory of "quantum gravity" which would place gravity on a similar footing as the other fundamental forces. This is a work in progress. We don't yet have a complete theory of everything.
 
No particle (or field) interacts directly with all other fields. Heck, gluons only barely interact with the rest of them. So why is it then that anything that has energy (e.g. everything that exists) also has a gravitational interaction? Gravity seems unique in that all particles interact through it.

Then there's the whole issue of affecting spacetime. As far as I'm aware, properties such as charge, spin, color, etc. don't affect spacetime (only the energy related to these properties).
 

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