2:25 PM
A new tag solid-state-physics, the tag-excerpt and tag-wiki have been created. (One more suggested edit is still pending.)
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The Lieb-Schultz-Mattis theorem [1] and its higher-dimensional generalizations [2] says that a translation-invariant lattice model of spin-1/2's cannot allow a non-degenerate ground state preserving both spin rotational and translation symmetries. Another way to state Lieb-Schultz-Mattis theorem...
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