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Is the higgs boson the mediator of the higgs field? 
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#1
Dec2113, 04:55 PM

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I'm a little confused about whether the higgs boson is the mediator of the higgs field. I haven't had a chance to study in depth the higgs field theory, but I have tried finding information from seemingly reliable sources and there are some apparent contradictions. I watched Leonard Susskinds lecture on the higgs boson, and he along with other sources have said that the higgs boson can be thought of as a dense region in the higgs field. Leonard susskind says that it is a particles exchange with another particle that he calls the "ziggs boson"; both absorbing and then reemitting the "ziggs" back into the condensate(higgs field?) that gives their mass. He then says the higgs boson is an excited state of the higgs field after the fact. This seems to imply that the higgs boson is not a mediator of the higgs field. I did read on fermilab's site saying that the higgs boson can interact with particles in more ways than the higgs field and in this sense the higgs boson can be thought of as a mediator of the higgs field. It was made clear that it's the higgs field that gives mass, so I'm not sure yo what extent the higgs boson mediates there. Finally, on the hyperphysics site here http://hyperphysics.phyastr.gsu.edu...ces/higgs.html and some more popular science sites, the higgs boson is described as the mediator of the higgs field and giving mass. I really appreciate any help sorting out my confusion.



#2
Dec2113, 09:25 PM

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Compare: The particle associated with the electromagnetic field is the photon. Photons mediate the electromagnetic interaction and may be thought of as mediators for electromagnetic field. The particle associated with the Higgs field is the Higgs boson. Higgs Bosons mediate the Higgs interaction which is what gives particles their mass. They can be though of "mediators of the Higg's field" in this sense. Susskind just described the Higgs interaction in more detail ... thinking of these particles "mediators" is something of a simplification for people who don't have the math. That help? 


#3
Dec2113, 09:42 PM

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#4
Dec2113, 10:44 PM

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Is the higgs boson the mediator of the higgs field?



#5
Dec2113, 11:01 PM

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#6
Dec2113, 11:46 PM

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Yeah, we may have to wait a bit for the theory to work itself out.
It's still at the esoteric math stage. 


#7
Dec2213, 05:26 AM

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One can speak of a force having a mediator, meaning a particle that serves to transmit the force from one object to another. The photon mediates the electromagnetic force, the graviton (if it exists) mediates the gravitational force, the W and Z mediate the weak force, and the gluon mediates the strong (aka color) force. There is no Higgs force to mediate. 


#8
Dec2213, 06:01 AM

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By Susskin's lecture, I thought that the ziggs boson is a goldstone boson... no wonder since he got it photonlike so massless... so it comes from fluctuations around the minimum of the higgs potential.
The higgs boson however,being massive, comes from fluctuations along the other possibility. What I mean is that having the complex field F you can write it F=F1+i F2 but you can also write it as F=R exp[iB] as "polar coords". The goldstone boson then would come from fluctuations on B and the higgs from R. So i hope I helped in your understanting. In SM from all I know, you can get rid of the goldstone bosons B by working on the unitary gauge, and giving some extra degrees of freedom to your W bosons. 


#9
Dec2213, 08:07 AM

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#10
Dec2213, 08:11 AM

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This is always going to be confusing if you try to run first before learning how to walk. So let's probe this a bit more and see if you already understood OTHER things first.
Let's try the electromagnetic interaction. Have you already understood the QFT picture of this interaction that is mediated via virtual photons? Zz. 


#12
Dec2213, 08:19 AM

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Zz. 


#13
Dec2213, 08:22 AM

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Is this what the Higgs Boson is but for the Higgs field? 


#14
Dec2213, 08:29 AM

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#15
Dec2213, 08:49 AM

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Zz. 


#16
Dec2213, 09:49 AM

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Here's a quote from a livescience article: "In physics, when particles interact with fields, the interaction must be mediated by a particle. Interactions with the electromagnetic (EM) field, for example, are mediated by photons, or particles of light. When a negatively charged electron is pulled by the EM field toward a positively charged proton, the electron experiences the EM field by absorbing and emitting a constant stream of "virtual photons" — photons that momentarily pop in and out of existence just for the purpose of mediating the particlefield interaction. Furthermore, when the EM field is "excited," meaning its energy is flared up in a certain spot, that flareup is, itself, a photon — a real one in that case. Along the same lines, the Higgs particle mediates interactions with the Higgs field, and is itself an excitation of the Higgs field. Particles are thought to trudge through the Higgs field (thereby acquiring mass) by exchanging virtual Higgs particles with it." http://www.livescience.com/21400wha...explained.html So here, now it's "virtual Higgs particles" that mediate the interaction. I feel like I'm sort of going in circles here. 


#17
Dec2213, 11:08 AM

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#18
Dec2213, 11:21 AM

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