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say you have a infinite potential well of length L, in the middle of the well a potential step of potential V and length x. Inside the well is a particle of mass m.

why are the first order energy corrections large for even eigenstates compared to odd ones?

also, say well (without the particle of mass m) you put two spinless non interacting bosons (total symmetric wave function). how could you find the wave functions of the first excited and the ground states, ignoring perturbation?

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# Homework Help: Potential well with inner step, perturbation theory

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