|A>=a|0>+b|1>(adsbygoogle = window.adsbygoogle || []).push({});

<A|A>=probability amp |<A|A>|^2=probability

If the state is same, so <A|A>= a^2+b^2=1. then i find the probability and no interference term in it!

so can i say <A|A>=|<A|A>|^2 and no square is needed? since if i square it become a^4+b^4=??

what wrong with it! and where should i place interference term?!

**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!

# Probability and probability amplitude

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