M*********m
发帖数: 2024 | 1 Lots of guys working on QFT had nothing to do after the standard model and so
they consider themselves as condensed matter physicists, like TD Lee, E.
Fradkin, PW Anderson, SC Zhang, PA Lee, J. Bardeen etc., basically they
generate models and are more concerned about the quasi-particles, thermal
excitations, strongly correlated systems, superconductivity, spin liquids,
etc. and quantum field aspects; while the solid state physicists are
considered as squalid state physicist, they are more famili | S*********g
发帖数: 5298 | 2
Come on. It's SO(5) not SO(8).
Well, that's 4D Quantum Hall Effect. And, it's not a supergravity theory.
【在 M*********m 的大作中提到】
: Lots of guys working on QFT had nothing to do after the standard model and so
: they consider themselves as condensed matter physicists, like TD Lee, E.
: Fradkin, PW Anderson, SC Zhang, PA Lee, J. Bardeen etc., basically they
: generate models and are more concerned about the quasi-particles, thermal
: excitations, strongly correlated systems, superconductivity, spin liquids,
: etc. and quantum field aspects; while the solid state physicists are
: considered as squalid state physicist, they are more famili
| S*********g
发帖数: 5298 | 3
Total charge is not a order parameter, though. It's a conserved quantity.
If there is phase seperation, you can define a order parameter, CDW.
If you want to put them together in a symmetry, you need to define
the rotation from one to the other. And you should be able to give
some strong predictions.
If you unify AF and SC within SO(5), there is a strong prediction
that you can rotate from SC to AF paying tiny energy. And, the vortex core
will be AF. This was predicted in 97 by SO5. And it was
【在 M*********m 的大作中提到】
: Lots of guys working on QFT had nothing to do after the standard model and so
: they consider themselves as condensed matter physicists, like TD Lee, E.
: Fradkin, PW Anderson, SC Zhang, PA Lee, J. Bardeen etc., basically they
: generate models and are more concerned about the quasi-particles, thermal
: excitations, strongly correlated systems, superconductivity, spin liquids,
: etc. and quantum field aspects; while the solid state physicists are
: considered as squalid state physicist, they are more famili
| S*********g
发帖数: 5298 | 4
It was mentioned in his science paper. Detailed calcualtion was published in 97.
The first authoe is Aravos who is in UCSD.
His story on pseudo-gap is that it's a disordered state of the pseudo-spin.
This does not make much difference from the pre-formed pair schema.
They developed a so-called projected SO5 model(PSO5) in 1999 to consider
the effect of Mott gap.
My understand of SO5 theory is that it introduce the competing between
AF and SC. And, this is quite remarkeable and sharp observation
【在 M*********m 的大作中提到】
: Lots of guys working on QFT had nothing to do after the standard model and so
: they consider themselves as condensed matter physicists, like TD Lee, E.
: Fradkin, PW Anderson, SC Zhang, PA Lee, J. Bardeen etc., basically they
: generate models and are more concerned about the quasi-particles, thermal
: excitations, strongly correlated systems, superconductivity, spin liquids,
: etc. and quantum field aspects; while the solid state physicists are
: considered as squalid state physicist, they are more famili
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