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## Main Question or Discussion Point

Hi,all, my problem is:

Consider a 2-D square well potential, say length 2L, and when I put one particle into this well,

Does this particles IMMEDIATELY know what wavefunction it should have?

I am trying to consider, once the particle enter the (middle of the)well, the information takes

at least t=L/c to reach that particle, to let the particle knows where it is in the well, and hence

what wavefunction should it have would be known by that particle.

Am I right?

Thanks in advance

Consider a 2-D square well potential, say length 2L, and when I put one particle into this well,

Does this particles IMMEDIATELY know what wavefunction it should have?

I am trying to consider, once the particle enter the (middle of the)well, the information takes

at least t=L/c to reach that particle, to let the particle knows where it is in the well, and hence

what wavefunction should it have would be known by that particle.

Am I right?

Thanks in advance