Recent content by Shelly1

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    Change in ground state energy due to perturbation

    You were right.unfortunately i have made a mistake with integral and it is never be zero.fIinally i got the same answer.Thank you Dclaude
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    Change in ground state energy due to perturbation

    Yes ofcourse...
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    Change in ground state energy due to perturbation

    Yes.but I got zero as answer.
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    Change in ground state energy due to perturbation

    The correct answer to this question is ε(π^2 -4)/ 2π^2. I don't know how they got this.
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    Change in ground state energy due to perturbation

    Homework Statement Consider a quantum particle of mass m in one dimension in an infinite potential well , i.e V(x) = 0 for -a/2 < x < a/2 , and V(x) =∞ for |x| ≥ a/2 . A small perturbation V'(x) =2ε|x|/a , is added. The change in the ground state energy to O(ε) is: Homework Equations The...