Energy–momentum relation

Common card · No. 200762

In physics, the energy–momentum relation, or relativistic dispersion relation, is the relativistic equation relating total energy (also called relativistic energy) to mass (also called invariant mass or rest mass) and momentum. It is the extension of mass–energy equivalence for bodies or systems with non-zero momentum. It can be formulated as This equation holds for a body or system, such as one or more particles, with total energy E, mass m, and momentum of magnitude p; the constant c is the speed of light. It assumes the special relativity case of flat spacetime and that the particles are free. Total energy is the sum of rest energy E0 = mc2 and relativistic kinetic energy: E K = E − E 0 = ( p c ) 2...

Read on Wikipedia · Image MikeRun, CC BY-SA 4.0