What makes up the bare mass of elementary particles?

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Discussion Overview

The discussion centers on the nature of the bare mass of elementary particles, exploring the distinction between bare mass and invariant mass, and the implications of string theory in this context. Participants also seek to clarify the composition of elementary particles such as electrons, quarks, and neutrinos.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification

Main Points Raised

  • Some participants inquire about the difference between bare mass and invariant mass, noting that invariant mass is measurable while bare mass is a theoretical concept related to renormalization.
  • One participant mentions string theory as a potential challenge to understanding the bare mass of elementary particles, expressing uncertainty about its validity.
  • Another participant asks for a simpler explanation of what elementary particles consist of, suggesting that the answer "they are quantum fields" may not suffice for all audiences.

Areas of Agreement / Disagreement

Participants express differing views on the adequacy of current explanations regarding the composition of elementary particles and the implications of string theory, indicating that multiple competing perspectives remain without consensus.

Contextual Notes

The discussion highlights the complexity of defining bare mass and invariant mass, as well as the challenges in conveying the nature of elementary particles, which may depend on specific theoretical frameworks.

timmdeeg
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TL;DR
Is it possible to describe in simple language what elementary particles like electrons, quarks or neutrinos having no inner structure do consist of?
And as an aside what is the difference between bare mass and invariant mass of such particles?
 
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string theory is regarded as a challenge to this quest ion. I don’t know it is the right way or not.
 
timmdeeg said:
Is it possible to describe in simple language what elementary particles like electrons, quarks or neutrinos having no inner structure do consist of?
Not if "they are quantum fields" isn't sufficient for you. That is the only answer that our current theories give.

timmdeeg said:
And as an aside what is the difference between bare mass and invariant mass of such particles?
The invariant mass is what we actually measure. The bare mass is a theoretical artifact that comes in as part of renormalization.
 
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Thanks!
 
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