In Dirac’s text the equation ¯UUα=α¯UU is well proven . Next it is said that since ¯UU commutes with all linear operators so it must be a number . Further since ¯UU and its complex conjugate are same so ¯UU is a real number . Also Dirac mentions that for any ket |P> , <P|¯UU |P> is positive and equal to <P|P> , so ¯UU can be taken as equal to 1 . How does the last equation is concluded ? [¯U being the complex conjugate of U ](adsbygoogle = window.adsbygoogle || []).push({});

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

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

# Unitary Transformation

Loading...

Similar Threads for Unitary Transformation |
---|

I Do macro objects get entangled? |

I Normalization and the probability amplitude |

I Non-unitary dynamics |

B Question about Unitary Operators and symmetry |

A Forming a unitary operator from measurement operators |

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