And watch out when you use this term among physicists, who will think you are referring to the momentum vector of an electron moving in a crystal. In that setting, momentum is conserved modulo the "momentum-lattice" associated with the crystal lattice (the dual lattice scaled by Planck's constant). In other words, the momentum equivalence classes of electrons in crystals are universally identified by their "k-vector". Veit On Mar 16, 2010, at 2:48 AM, mcintosh@servidor.unam.mx wrote:
Quoting Fred lunnon <fred.lunnon@gmail.com>:
Nice one --- and what's more, not unrelated to Geometric Algebra!
One way and another, "k-vector" begins to look fairly flaky notation in any context ... WFL
Quite possibly that depends on whether one wants to regard it as a formal definition, or just the way some mathematicians tend to say certain things.
-hvm
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