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What is the Higgs?

142 点作者 subsystem超过 11 年前

9 条评论

yk超过 11 年前
(Sorry for ranting instead of explaining, but I do not have much time at the moment.)<p>I really hate this molasses explanation of the Higgs field. The problem is, it is wrong, suggests a wrong intuition and obstructs actually interesting physics. It is wrong, because the mass is something very different from friction. It suggests a wrong intuition, because the snow field, or the molasses, generates a force when something is moving through the medium. But there is no medium to move through. ( And mass acts, when there is a change of velocity, friction if there is velocity.) And the last point, the Higgs mechanism is a mathematical manipulation, which gets a term into the equations, that looks exactly like a mass term would. ( But without breaking electro weak symmetry.) There is really a lot of interesting physics going on here. The most fundamental question is probably, what is the relation between reality and physical models. If in one model the Z boson is massive, and in a equivalent model the Z boson is massless, but both models agree on every quantitative prediction. In which sense can we say that the Z boson is massive?
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kachnuv_ocasek超过 11 年前
Back in 1993 there was a competition whose target was to explain the Higgs in one page of text. I found these very enlightening as well. Here are the winners:<p><a href="http://www-cdf.fnal.gov/~bernd/higgs/" rel="nofollow">http:&#x2F;&#x2F;www-cdf.fnal.gov&#x2F;~bernd&#x2F;higgs&#x2F;</a>
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InclinedPlane超过 11 年前
The best explanation of the Higgs mechanism I&#x27;ve seen so far has been from &quot;minute physics&quot;:<p>Part 1: <a href="http://www.youtube.com/watch?v=9Uh5mTxRQcg" rel="nofollow">http:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=9Uh5mTxRQcg</a><p>Part 2: <a href="http://www.youtube.com/watch?v=ASRpIym_jFM" rel="nofollow">http:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=ASRpIym_jFM</a><p>Part 3: <a href="http://www.youtube.com/watch?v=6guXMfg88Z8" rel="nofollow">http:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=6guXMfg88Z8</a><p>(If you only watch one part, watch part 2, it&#x27;s only 170 seconds long.)
davrosthedalek超过 11 年前
Nicely made, however most visible mass (i.e. the mass of protons&#x2F;neutrons) is generated dynamically by the quark interactions.
gibybo超过 11 年前
I have a basic understanding of electrons and the electric field. Can I think about a Higgs particle like a particle with a mass charge? Does the field work similarly to the electric field? Do all particles with mass have a Higgs particle in them?
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Le_SDT超过 11 年前
Very good presentation for someone like me with no knowledge in physics but still facinated by all those discoveries! :) Thanks
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ssivark超过 11 年前
That&#x27;s a very nice illustration.<p>If you&#x27;d like a quick read, here&#x27;s an &quot;elevator pitch&quot; explaining the Higgs mechanism&#x2F;boson -- <a href="http://dickfeynman.ruhoh.com/physics/higgs-for-laypeople/" rel="nofollow">http:&#x2F;&#x2F;dickfeynman.ruhoh.com&#x2F;physics&#x2F;higgs-for-laypeople&#x2F;</a>
geldedus超过 11 年前
Higgs boson, not the Higgs
khuckzz超过 11 年前
The animation and illustrations are cool but I still have no idea what a Higgs is.