Re: Mass and strong interaction.
- From: Eugene Stefanovich <eugenev@xxxxxxxxxxxx>
- Date: Fri, 24 Jun 2005 04:17:16 +0000 (UTC)
DW wrote:
In other words, why we need some force to accelerated something (e.g a neutron) in vacuum from the view point of QFT? Is it due to some kind of interaction preventing the acceleration of the neutron? Or is it because of the structure of space-time? Is this related to Higgs?
This is called "Newton's 1-st law": a particle does not accelerate (moves with a constant velocity) if there are no other particles around which can interact with it.
If there are other particles around, then normally the first particle feels a force, i.e., accelerates. Particle's mass m connects acceleration with force. Most naturally, parameter m (along with spin) appears in the Wigner's classification scheme of elementary particles as unitary irreducible representations of the Poincare group.
Eugene Stefanovich.
.
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- Mass and strong interaction.
- From: DW
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