Klein-Gordon 相对论E和p关系 E2=+m2 量子力学对应算符 and 币- Oskar Klein Klein-Gordon方程 (相对论Schrodinger方程) 那0=-26+m26 or (o+m)x)=0 or: (a,+m2)r)=0 方程的解 能量本征值： o(x)=Ne-ipuah E2=+m2 能量可以取+值： E=土v+m Walter Gordon Dirac Paul Dirac试图找到tried to find an equation that was relativistically correct, but linear in d/dt to avoid negative energies (and linear in d/dx (or V)for Lorentz covariance) He found an equation that turned out to describe spin-1/2 particles and predicted the existence of anti-particles 22 or : 能量本征值: 相对论E 和 p关系 量子力学对应算符 方程（相对论 方程） 方程的解 能量可以取+-值： Oskar Klein Walter Gordon Paul Dirac 试图找到tried to find an equation that was  relativistically correct,  but linear in d/dt to avoid negative energies  (and linear in d/dx (or ) for Lorentz covariance) He found an equation that  turned out to describe spin-1/2 particles and  predicted the existence of anti-particles