1. Limited time only! Sign up for a free 30min personal 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!

Article about symmetries (math problems)

  1. Aug 17, 2012 #1
    Hi all.

    When I was reading a paper (http://physics.brown.edu/physics/undergradpages/theses/SeniorThesis_tlevine1.pdf) I have had a problem. I don’t understand some equations, namely I don’t understand 2.22 and 2.36. I confused by derivative [itex] \left(\frac{\partial t’}{\partial t}\right)^{\frac{1}{2}}[/itex] in the last (2.36) equation.
    It’s clear for me, that it is mathematical trick, but I don’t know it. I would be happy if you could give me an explanation or a link for some literature.

  2. jcsd
  3. Aug 17, 2012 #2


    User Avatar
    2017 Award

    Staff: Mentor

    I think you have to use the given potential and its scaling.

    [itex]q \to \sqrt{\lambda} q[/itex] is equivalent to a scaling of V by 1/λ, and this corresponds to a scaling of [itex]t \to \lambda t[/itex].
    +- some exponents
  4. Aug 18, 2012 #3
    thank you, i get it
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook