Previously I posted about recent numerical work which suggested that the Hubbard model on the honeycomb lattice and the Heisenberg model on the kagome lattice may have spin liquid ground states. At the Journal Club for Condensed Matter Physics, Steve Kivelson has a nice commentary on these two papers. One point important question he focuses on is whether or not these states have topological order, signified by a degenerate ground state, whose degeneracy only depends on the topology of the lattice [e.g. a torus].
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Pattern formation and emergence
Patterns in space and/or time form in fluid dynamics (Rayleigh-Bénard convection and Taylor-Couette flow), laser physics, materials science ...

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Nitrogen fluoride (NF) seems like a very simple molecule and you would think it would very well understood, particularly as it is small enou...
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