Are elementary particles subject to inertia?

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Discussion Overview

The discussion revolves around the concept of inertia as it applies to elementary particles, specifically whether they possess inertial mass similar to composite objects, and how this affects their motion and interactions with forces. Participants explore the implications of Newton's laws in the context of subatomic particles and wave functions.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • Some participants propose that elementary particles do have inertial mass and that this affects their motion and the forces acting on them.
  • There is interest in understanding the precise effects of inertia on individual particles, such as electrons, during acceleration or deceleration.
  • Questions are raised about whether the force required to accelerate a particle is proportional to its mass, similar to composite objects.
  • Some participants assert that Newton's laws apply universally, regardless of whether the objects are composite or elementary.
  • Discussion includes how Newton's laws relate to wave functions, particularly in the absence of forces, and whether non-plane-wave functions are subject to inertia.
  • One participant mentions the Ehrenfest theorem as a connection between Newton's laws and wave functions.
  • There is a suggestion that the bending of electrons by a magnetic field could provide insights into the effects of inertia.

Areas of Agreement / Disagreement

Participants generally agree that elementary particles have inertial mass and that Newton's laws apply to them. However, there are multiple competing views regarding the implications of these concepts, particularly in relation to wave functions and the nature of inertia at the subatomic level.

Contextual Notes

Participants express uncertainty about the exact nature of inertia and its effects on elementary particles, as well as the relationship between classical mechanics and quantum mechanics, particularly in the context of wave functions.

mitrasoumya
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Do elementary particles have inertial mass in the same way composite objects have? If yes, does it have an impact on the motion or on the forces that act on them?
 
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Yes and yes. Do you have any reason to think otherwise?
 
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DrClaude said:
Yes and yes. Do you have any reason to think otherwise?
Thank you. Actually, I am interested about knowing the precise effect of inertia on (individual) particles. For example the role of inertia on an electron when it is made to accelerate or decelerate. I also want to know if that requires a force proportional to the mass of that particle as for composite objects. I want to know the exact way in which inertia (and also gravity) works at the subatomic level. Is there any difference in the "laws of motion" or interaction with forces in the subatomic world compared to the world of composite (visible) objects?
 
mitrasoumya said:
I also want to know if that requires a force proportional to the mass of that particle as for composite objects.
Yes.

Newton's laws apply to all objects, it does not matter if they are composite or not.
 
How do Newton´s laws map to the properties of wave functions?

For example, inertia is the law that, in absence of forces acting on a body, a body will be stationary or else move in a straight line at a constant speed.
What does this mean in terms of a wave function in absence of any potential? Plane wave? Are non-plane-wave functions subject to inertia?
 
snorkack said:
How do Newton´s laws map to the properties of wave functions?
For one, there is the Ehrenfest theorem.
 
snorkack said:
What does this mean in terms of a wave function in absence of any potential? Plane wave? Are non-plane-wave functions subject to inertia?
The wave function is not the electron. It is a probability wave.

mitrasoumya said:
Actually, I am interested about knowing the precise effect of inertia on (individual) particles.
One very easy way to go about this, is the bending of electrons by a magnetic field (see for example Thompson's experiment)... There you can actually see the electrons :biggrin: (boom!)
 
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