Spin of an elementary particle

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SUMMARY

The discussion centers on the concept of spin in elementary particles, clarifying that spin is not a physical rotation but rather an intrinsic angular momentum. Participants emphasize that elementary particles, such as electrons, cannot be visualized as spinning objects due to their point-like nature. The conversation also highlights the significance of Pauli matrices in understanding spin, particularly for particles with spin values of 1/2 or -1/2. Overall, the discussion aims to demystify the abstract nature of spin in quantum mechanics.

PREREQUISITES
  • Understanding of quantum mechanics fundamentals
  • Familiarity with intrinsic angular momentum concepts
  • Basic knowledge of Pauli matrices
  • Awareness of particle physics terminology
NEXT STEPS
  • Study the properties of intrinsic angular momentum in quantum mechanics
  • Learn about Pauli matrices and their applications in quantum theory
  • Explore the implications of spin in particle collisions
  • Investigate the role of the Higgs field in particle physics
USEFUL FOR

Students and professionals in physics, particularly those focusing on quantum mechanics and particle physics, will benefit from this discussion to enhance their understanding of spin and its implications in the field.

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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