Non-massed particles gaining mass

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    Mass Particles
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Discussion Overview

The discussion centers around the concept of massless particles, specifically photons, and their potential interaction with the Higgs field to gain mass. Participants explore theoretical implications of the Higgs mechanism, the nature of mass in particles, and the conditions under which particles may exhibit mass.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant questions whether a massless particle like a photon could gain mass through the Higgs field and suggests that lowering its energy level might allow it to absorb a Higgs boson.
  • Another participant asserts that if a particle gains mass via the Higgs mechanism, it possesses that mass at all times and cannot transition from massless to massive.
  • A different viewpoint claims that the Higgs mechanism is a theoretical construct to achieve renormalizable interactions, implying that particles are inherently massive.
  • Another participant argues that particles are massless immediately after the big bang due to the unbroken electroweak symmetry and the Higgs field's expectation value being zero.
  • A question is raised about whether high-energy stellar collisions could break the vacuum of space and scatter symmetry.
  • One participant provides a numerical estimate of the energy and temperature conditions required for mass generation, linking it to the early universe during the big bang.

Areas of Agreement / Disagreement

Participants express differing views on the nature of mass in particles and the implications of the Higgs mechanism. There is no consensus on whether massless particles can gain mass or the conditions under which this might occur.

Contextual Notes

Discussions involve assumptions about the Higgs field, the nature of mass, and the conditions of the early universe, which may not be fully resolved or agreed upon by all participants.

dbmorpher
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Would it be possible to have a mass-less particle such as a photon given mass through the Higgs field?
Could the photon be slowed down by a lowering of the energy level then absorb the H boson?
I know the answer is probably no but I would like to learn why.
 
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If a particle (better: a particle type) gains mass via the Higgs mechanism, it has that mass always, and everywhere. There are no massless particles which "somehow" get mass later. Concerning why... it is a result of quantum field theory.

a lowering of the energy level then absorb the H boson?
That does not make sense (both).
 
The Higgs mechanism is just a theoretical 'trick' to achieve the correct renormalizable interactions in the Standard Model of Particles and Interactions. The particles are 'massive' to begin with.
 
Actually, the particles are massless to begin with. Right after the big bang the temperature is so high that the vacuum state is a false vacuum, in which the expectation value of the Higgs field is zero, electroweak symmetry is unbroken, and the masses of the gauge bosons, quarks and leptons are zero.
 
So in high energy stellar collisions the vacuum of space is broken and symmetry scattered?
 
The energy required is something like 1014 to 1016 GeV, corresponding to a temperature of 1027 to 1029 K. The only time such a temperature ever existed was in the big bang.
 

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