I am reading about Dirac's equation for relativistic electron in Feynman's book "Quantum Electrodynamics". Factor [itex]\gamma =(1-v^2)^{-1/2}[/itex] (units c=1) is almost always presented in non quantum calculations of Special relativity. But in his book I also find it on page 44 in lecture "Relativistic invariance", when he shows Lorentz transformations of his matrix [itex]\gamma_{x,y,z,t}[/itex](adsbygoogle = window.adsbygoogle || []).push({});

1. But, I still ever do not understand, what is quantum analog of equation [itex]p=\gamma mv[/itex].

2. Is this analog [itex]\alpha p[/itex], or only [itex]p[/itex]. [itex]\alpha[/itex] is matrix.

3. I also wish examples which uses the above [itex]\gamma =(1-v^2)^{-1/2}[/itex] in calculations?

**Physics Forums - The Fusion of Science and Community**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Dirac equation and gamma factor

Loading...

Similar Threads - Dirac equation gamma | Date |
---|---|

I Simplify the Dirac Energy Equation? | Yesterday at 11:18 AM |

I Use the Dirac Equation to calculate transition frequencies in Hydrogen | Mar 6, 2018 |

I Dirac's Equation vs. QFT | Feb 27, 2018 |

I Why this system has a rotational symmetry in Dirac equation? | Dec 23, 2017 |

I Why are the gamma-matrices invariant? | Feb 24, 2016 |

**Physics Forums - The Fusion of Science and Community**