Sorry for asking so many questions at one go! In section 19.6.3 (Curie paramag in solids) of your book, you argue how a Mott insulator with strong Coulomb interaction between electrons can be considered to be a Curie paramag.
However, in section 23.2 (Mott Antiferromag), you also argue that the same thing (large U => strong Coulomb interaction) can lead to an antiferromagnet. What's the difference between the two cases? Is there something that I'm missing?
The way I see it (correct me if I'm wrong), the likelihood of hopping is related to the U in Hubbard interaction: The larger U is, the greater is the energy cost for having two electrons on the same site, and thus the less likely hopping is.
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