All Questions
3 questions
2
votes
2
answers
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Definition of the Ashkin-Teller model
There seems to be two different definitions of the so-called "Ashkin-Teller model", and I'm not sure which one is the one assumed by physicists (or which one is of more interest).
First, in ...
- 723
4
votes
2
answers
528
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What is short-range antiferromagnetic order?
I know what anti-ferromagnetism is. But in a paper I came across "short-range antiferromagnetic order". Can someone please explain to me what it is.
- 397
5
votes
0
answers
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What is the Haldane phase?
I'm trying to look up what is the Haldane phase, but the only thing I find is examples of physical systems that "realize" the Haldane phase, such as the AKLT model, but no clear definition of what ...
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