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If we measure the position of a particle in a free space, and say we find that it is at x0,

what is the wavefunction right after the measurement in x representation?

shouldn't it be delta (x-x0), because delta functions are the eigenfunctions of the position operator?

Another question is how do I find the eigenfunctions of the Hamiltonian of a free particle in x representation?

Thanks in advance

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# Homework Help: Quantum mechanics - a free particle

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