Mass of Electron: What is True?

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    Electron Mass
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Discussion Overview

The discussion revolves around the nature of the electron's mass, questioning whether it possesses intrinsic mass or if its mass arises from interactions with the Higgs field. Participants explore related concepts such as electromagnetic mass and the distinctions between bare mass and renormalized mass, as well as implications for other fundamental particles like quarks.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant suggests that the electron may have no intrinsic mass and instead gains mass through interactions with the Higgs field, questioning the validity of this idea.
  • Another participant introduces the Yukawa interaction as a mechanism for how a scalar field couples to a fermion field, potentially relating to the mass of the electron.
  • A participant recalls a historical perspective that part of the electron's mass might have been attributed to the energy in its electric field, raising questions about how this relates to the Higgs field model.
  • There is a discussion about the concepts of bare mass and renormalized mass, with one participant expressing uncertainty about their definitions and how they relate to intrinsic mass and Higgs-acquired mass.
  • Another participant seeks clarification on whether the intrinsic mass can be identified with the mass acquired from the Higgs field and questions the meaningfulness of distinguishing between contributions to the observed mass from the Higgs and electromagnetic effects.

Areas of Agreement / Disagreement

Participants express various viewpoints regarding the nature of the electron's mass, with no consensus reached on whether it has intrinsic mass or how different mass concepts relate to each other.

Contextual Notes

The discussion highlights the complexity of mass definitions, including intrinsic, electromagnetic, bare, and renormalized mass, without resolving the relationships or distinctions among them.

daisey
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I thought that somewhere I read the Electron has no intrinsic mass, but instead gains it's mass via interaction with the Higg's field. But I found no reference to this in the electron's Wikipedia definition (although it is a long article, and I might have missed it).

So what is true about the mass of the electron? And if the electron really has no intrinsic mass, is this also the case with other fundamental particles (i.e. Quarks)?
 
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Here is what you are looking for:

Yukawa Interaction

This is how a scalar field couples to a fermion field :)
 
but was it not once thought that the mass of the electron, (or at least part of it), was due to the energy tied up in its electric field? since presumably this electromagnetic mass effect still make some kind of contribution to the actual observed mass, how does that fit into the higgs field picture?
 
f.c. said:
but was it not once thought that the mass of the electron, (or at least part of it), was due to the energy tied up in its electric field? since presumably this electromagnetic mass effect still make some kind of contribution to the actual observed mass, how does that fit into the higgs field picture?

Are you talking about the bare mass versus the renormalized mass?
 
jfy4 said:
Are you talking about the bare mass versus the renormalized mass?

oh dear! i am not at all sure! i suspect i asked the wrong question because i do not precisely understand what is going on! so, try again! -- and to quickly recap, the old idea was, i believe, that the total mass of the electron was comprised of an intrinsic mass or mechanical mass, i.e. the mass it would have if the electric charge could somehow be switched off, plus an electromagnetic mass due to the energy of the electric field. so, with that picture in mind, can one identify the intrinsic mass or mechanical mass with the mass acquired from the higgs field? and if so, is it meaningful to ask what fraction of the observed mass of ~0.51MeV is higgs and what fraction electromagnetic?
and now just to add to the confusion, where would the bare mass and renormalized mass fit in? is the bare mass the same thing as the intrinsic mass or higgs acquired mass? there are far too many masses here for my peace of mind!
 

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