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keepit
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What is the Higgs boson's mechanism for giving mass?
keepit said:does anyone here know what the Higgs mechanism is?
No. It's just like any other quantum field, except that there is a property of the Higgs field that is nonzero in space.keepit said:is the Higgs field equivalent to space itself?
bapowell said:No. It's just like any other quantum field, except that there is a property of the Higgs field that is nonzero in space.
That's the energy of the Higgs vacuum; I'm referring to the vacuum expectation value of the field. The latter is definitively nonzero, the former is unknown. I have no idea Veltman thinks there needs to be an energy associated with the Higgs field that would cause the universe to collapse.my2cts said:Actually the Higgs field in the vacuum should be so strong that according to Nobel laureate Veltman the universe would collapse to the size of a football.
http://lepfest.web.cern.ch/LEPFest/OfficialCeremony/Speeches/MartinusVeltman.html
bapowell said:That's the energy of the Higgs vacuum; I'm referring to the vacuum expectation value of the field. The latter is definitively nonzero, the former is unknown. I have no idea Veltman thinks there needs to be an energy associated with the Higgs field that would cause the universe to collapse.
bapowell said:That's the energy of the Higgs vacuum; I'm referring to the vacuum expectation value of the field. The latter is definitively nonzero, the former is unknown. I have no idea Veltman thinks there needs to be an energy associated with the Higgs field that would cause the universe to collapse.
keepit said:In general is the technique of renormalization required because of interactions?
I know the question is vague. That's because there's a lot i don't know.
See the figure in this post: http://dorigo.wordpress.com/2007/11/10/the-goldstone-theorem-for-real-dummies/. The values +/- [itex]\nu[/itex] are the vacuum expectation values of the field for the corresponding vacuum. The Higgs starts in the middle, at the local maximum (the false vacuum), and rolls down to one of the minima (true vacua). The energy of the true vacua, [itex]V(\pm \nu)[/itex], is the vacuum energy of the Higgs. So the vacuum expectation value of the field and the vacuum energy are different things. It is generally assumed that [itex]V(\nu)=0[/itex], but this is really just put in by hand. If [itex]V(\nu)<0[/itex], then the universe should collapse if the Higgs field is dominating the energy density of the universe (this might be what Veltmann is talking about). Otherwise, if [itex]V(\nu)>0[/itex], the universe should inflate once the Higgs field dominates.my2cts said:Can you explain the difference?
bapowell said:That's the energy of the Higgs vacuum; I'm referring to the vacuum expectation value of the field. The latter is definitively nonzero, the former is unknown. I have no idea Veltman thinks there needs to be an energy associated with the Higgs field that would cause the universe to collapse.
The Higgs boson's mechanism for giving mass is a theoretical concept in particle physics that explains how particles acquire mass. It proposes that the Higgs field permeates the universe and interacts with particles, giving them mass.
The Higgs boson is a particle that is associated with the Higgs field. When particles interact with this field, they gain mass through a process called the Higgs mechanism. This interaction slows down particles and gives them a resistance to acceleration, which we perceive as mass.
The Higgs boson's mechanism is important because it helps explain one of the fundamental questions in physics - why particles have mass. It also provides a way to unify the electromagnetic and weak forces, which are two of the four fundamental forces in nature.
The Higgs boson's mechanism was discovered in 2012 by the Large Hadron Collider (LHC) at CERN. Scientists detected a particle that behaved similarly to what was predicted by the Higgs mechanism, confirming its existence.
The discovery of the Higgs boson's mechanism has opened up new avenues for research in particle physics. It has also provided evidence for the existence of the Higgs field, which could potentially lead to the discovery of new particles and a deeper understanding of the fundamental forces in the universe.