The wavefunction of a two-particle system in a bound state that interacts through this fundamental force is given by the Bethe-Saltpeter equation. The gauge boson controlling this interaction obeys a form of the Klein-Gordon equation in which the energy is given by the product of the momentum and the speed of light. This interaction is described by the U(1) symmetry group. Powers of its coupling constant appear in derivations of fine and hyperfine structure. The only interaction mediated by a massless particle, the Glashow-Weinberg-Salaam theory unifies this force with the weak force. Its quan
The wavefunction of a two-particle system in a bound state that interacts through this fundamental force is given by the Bethe-Saltpeter equation. The gauge boson controlling this interaction obeys a form of the Klein-Gordon equation in which the energy is given by the product of the momentum and the speed of light. This interaction is described by the U(1) symmetry group. Powers of its coupling constant appear in derivations of fine and hyperfine structure. The only interaction mediated by a massless particle, the Glashow-Weinberg-Salaam theory unifies this force with the weak force. Its quantized form is graphically described by Feynman diagrams. For 10 points, name this fundamental force, which is described by the Maxwell equations and which is mediated by photons.
The wavefunction of a two-particle system in a bound state that interacts through this fundamental force is given by the Bethe-Saltpeter equation.
 {electromagnetism} [accept word forms]