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- Newsgroups: sci.physics
- Path: sparky!uunet!haven.umd.edu!purdue!yuma!csn!boulder!ucsu!cubldr.colorado.edu!parson_r
- From: parson_r@cubldr.colorado.edu (Robert Parson)
- Subject: "Anderson-Higgs Mechanism" (Re: Solid-State doesn't use QED!)
- Message-ID: <1992Nov8.151920.1@cubldr.colorado.edu>
- Lines: 32
- Sender: news@ucsu.Colorado.EDU (USENET News System)
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- Organization: University of Colorado, Boulder
- References: <gewIg2C00WBL01w4Qz@andrew.cmu.edu> <3NOV199213063917@erich.triumf.ca> <MATT.92Nov8120704@physics.berkeley.edu>
- Date: Sun, 8 Nov 1992 22:19:20 GMT
- Lines: 32
-
- In article <MATT.92Nov8120704@physics.berkeley.edu>, matt@physics.berkeley.edu (Matt Austern) writes:
- > In article <BxEuvI.59p@wsrcc.com> alison@wsrcc.com (Alison Chaiken) writes:
- >
- >> What is the Anderson-Higgs mechanism? My very limited understanding
- >> of the Higgs mechanism is that a new gauge boson (which would be
- >> called a collective mode in solid-state) is postulated to explain how
- >> the fundamental particles (which would be the quasiparticles) obtain
- >> their different mass energies (which would be the effective mass).
- >
- > When high-energy theorists talk about the Higgs mechanism, what they
- > mean is somewhat more general than that. It's just how if a gauge
- > symmetry is broken spontaneously, then there aren't any Goldstone
- > bosons, but, instead, the gauge bosons become massive.
-
- > My understanding is that solid-state theorists do indeed work with
- > models in which this happens. (e.g., massive photons in
- > superconductors)
-
- Yes, that's the context of Anderson's work, published in 1958 (in the
- immediate aftermath of BCS). There were a number of questions (excuse
- me, my memory is very vague on this) concerning the gauge-invariance of
- BCS. Anderson showed that the gauge invariance of the electromagnetic
- field in a superconductor led to the existence of longitudinal plasmons
- with a nontrivial dispersion relation (nonzero effective mass). Five
- years later he published a paper that considered the implications of the
- mechanism for quantum field theory (Phys. Rev. _130_, 439, 1963.) I don't
- know to what extent he anticipated Higgs et al. in this latter work.
-
- See, for example, _Quantum Many-Particle Systems_, by Negele and Orland,
- p. 222.
-
- Robert (getting out of his depth as usual.)
-