from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An extremely fast oscillation of free electrons (and other particles) predicted by some solutions of the Dirac equation
Another consequence of those negative-energy states is the phenomenon given the awesome name zitterbewegung which, while it sounds to American ears like a dramatic exclamation actually translates to the relatively anticlimactic "trembling motion."
An ansatz to the ‘Talk Like a Physicist’ problem: Throw in random German words, like ‘brehmsstahlung’ and ‘zitterbewegung’.
The physical origin of the zitterbewegung is, I think, fascinating.
Without zitterbewegung, there would be no Darwin term in the electron Hamiltonian, which would lead to all sorts of readily observable effects (such as a huge Lamb shift).
Like, for example, zitterbewegung, a word that just demands an exclamation point: