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Lagrange function

  1. Nov 19, 2008 #1
    1. The problem statement, all variables and given/known data

    derive from the Lagrange function and with the use of the midpoint rule, the Schrodinger equation for a particle with charge e coupled to a vector potential?

    2. Relevant equations

    L=(1/2)m Xt2+ e Xt . A(Xt,t)

    I mean by X== X dot, but A is a fun. of X and t

    3. The attempt at a solution

    I even cant start such a quastion, coz this is my first course in quantum but since Im from Denemark my Pakistani teacher always gives me too much hard quastions to solve!!
  2. jcsd
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