How Does Special Relativity Explain Particle Attraction?

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Discussion Overview

The discussion revolves around the relationship between special relativity and electromagnetic forces, particularly in the context of particle attraction and how these forces contribute to the composition of objects at a macro level. Participants explore the implications of relativity on the understanding of forces and interactions at both small and large scales.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant questions how relativity addresses electromagnetic forces and particle attraction, noting that action at a distance is not permissible in relativity.
  • Another participant asserts that all interactions can be described using fields and local field equations, emphasizing that quantum field theory incorporates special relativity and describes classical forces at low energies.
  • A different participant highlights the ongoing challenge in modern physics of connecting various forces, suggesting that a complete understanding remains elusive.
  • Some participants express skepticism about the relevance of connecting different forces to the original question, arguing that current fundamental descriptions of forces are grounded in special relativity.
  • One participant summarizes the frameworks of general relativity and quantum field theory, indicating that both require special relativity for their current formulations.

Areas of Agreement / Disagreement

Participants exhibit a mix of agreement and disagreement. While there is consensus that special relativity plays a crucial role in the description of forces, there is contention regarding the relevance of connecting different forces to the initial question about particle attraction.

Contextual Notes

Some participants note the complexity of connecting various forces, particularly gravity with other fundamental forces, without reaching a resolution on how these connections impact the understanding of particle attraction.

analyst5
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Hi folks,
I was thinking about this question for some time and I need some clarification. What is the take by relativity on electromagnetic forces and attraction between molecules, and other particles on a smaller scale? How do they compose objects on a macro level? I know that action at distance is impossible in relativity, so I believe that this facr certainly has some impact in the answer.

I'm looking forward to the answers.
 
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I know that action at distance is impossible in relativity
You can express everything with fields and local field equations, without instantaneous actions at a distance.

Quantum field theory includes special relativity, and it leads to the classical forces between charged particles in the limit of low energies (non-relativistic particles).
 
But the general problem of connecting the various forces is one of the important problems in modern physics. We really don't know the full answer to that question.
 
I don't see how connecting the different forces (mainly gravity with the other forces) is related to the question. All current (fundamental) descriptions of forces are based on special relativity.
 
mfb said:
I don't see how connecting the different forces (mainly gravity with the other forces) is related to the question. All current (fundamental) descriptions of forces are based on special relativity.

Can you describe any of those in short terms?
 

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