Is it true that in first quantization the PI includes the possible trajectories a particle can take, but it does not include how particles can change into other kinds of particles (electrons to photons, etc). And QFT (second quantization) calculates how particles can branch off into other particles, but it does not calculate their trajectories. Is this right? Thanks.(adsbygoogle = window.adsbygoogle || []).push({});

**Physics Forums | Science Articles, Homework Help, Discussion**

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!

# Path Integral in first and second quantization

Loading...

Similar Threads for Path Integral second |
---|

I A Proof of Kaku (8.18). |

I Path Integrals in Quantum Theory |

I Random measurements in QED? |

A Path Integral of a Spontaneously Broken Theory |

I Feynman path integral |

**Physics Forums | Science Articles, Homework Help, Discussion**