The wave function of "particle in a box" is Asin(kx).(adsbygoogle = window.adsbygoogle || []).push({});

Since potential energy is zero inside the box, so the Hamiltonian is just kinetic energy

In principle, I should be able to find eigenvalue of momentum using momentum operator,

but stymied in solving the equation. Can somebody help me find whereabouts I am going wrong here? Thanks.

Here's the link to Particle in a Box

http://hyperphysics.phy-astr.gsu.edu/hbase/quantum/pbox.html#c1

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# Eigenvalue of momentum for particle in a box

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