1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

What does |0> mean? ie what does the | > mean/do?

  1. Nov 26, 2006 #1

    Lee

    User Avatar

    What does |0> mean? ie what does the | > mean/do?
     
  2. jcsd
  3. Nov 26, 2006 #2

    Hurkyl

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    | > is just a decoration; it makes something look different. It's no different than when you put a little arrow over your vectors, or little hats over your unit vectors.
     
  4. Nov 26, 2006 #3

    Lee

    User Avatar

    Ah, right. I thought it was maybe linked to < > meaning expectation value.
     
  5. Nov 26, 2006 #4

    selfAdjoint

    User Avatar
    Staff Emeritus
    Gold Member
    Dearly Missed

    Well when you take the inner product of <x| with |x> you get <x|x>, which is a number and can be thought of as an expecttion. So the notation ("Bra and ket") isn't entirely arbitrary.
     
  6. Nov 27, 2006 #5

    dextercioby

    User Avatar
    Science Advisor
    Homework Helper

    [itex] |0\rangle [/itex] stands for the ground state for a quantum system (the state with the minimum possible energy). The [itex] |\rangle [/itex] with "something" in between the vertical line and the angle means that the "something" is a "ket" vector.

    Daniel.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: What does |0> mean? ie what does the | > mean/do?
  1. What does POVM mean? (Replies: 2)

Loading...