Spin of an elementary particle

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Discussion Overview

The discussion revolves around the concept of spin in elementary particles, addressing whether it represents physical rotation and how it relates to the Higgs field. Participants explore the nature of spin, its intrinsic properties, and the implications of these characteristics in particle physics.

Discussion Character

  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • Some participants assert that spin is an intrinsic angular momentum and cannot be modeled as actual spinning of a particle, as particles are considered point-like.
  • There is uncertainty about whether the intrinsic angular momentum of particles is expressed through the "spin" they create after collisions.
  • Participants mention the relevance of Pauli matrices in understanding spin, although some express a lack of understanding of this concept.
  • One participant suggests imagining elementary particles as three-dimensional wave packets interacting with the Higgs field, though this idea is met with skepticism.

Areas of Agreement / Disagreement

Participants generally agree that spin is not a physical rotation, but there is disagreement regarding its implications and how it should be conceptualized, particularly in relation to the Higgs field and the mathematical tools used to describe it.

Contextual Notes

Some participants express confusion about the relationship between intrinsic angular momentum and observable phenomena, such as collisions, and there is a noted lack of clarity regarding the Pauli matrices and their role in the discussion of spin.

Who May Find This Useful

This discussion may be useful for individuals interested in the foundational concepts of quantum mechanics, particularly those seeking to understand the nature of spin in elementary particles.

Daveman20
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Two basic questions here, thanks and good karma to whoever helps. my questions are:

The spin of an elementary particle, is it really the physical rotation of a particle on its axis?

and

Can I imagine that an elementary particle looks like a three dimensional wave packet laying/distorting the assumed higgs field?
 
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1) no, spin is sort of an intrinsic angular momentum; however, it cannot be modeled as a particle actually spinning. As far as we know, particles are points and therefore can't really spin.

2) I have no idea.
 


2) no
 


Spin: i agree it is always confusing..It is not the rotation or spinning..
For e.g., there is only two kinds of spin for a electron 1/2 or -1/2.
It is better if you think of Pauli matrices..
 


Matterwave said:
1) no, spin is sort of an intrinsic angular momentum; however, it cannot be modeled as a particle actually spinning. As far as we know, particles are points and therefore can't really spin.

So okay, this intrinsic Angular Momentum.. is it expressed by the literal "spin" particles create after they collide?

So far I understand that particles are "born" with this property of spin. Pauli Matrices I do not yet understand. I've wiki'd spin but would just like the layman's version please.
 

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