Identical particles, spin, fermions, etc.

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SUMMARY

The discussion focuses on calculating the energy and wavefunctions of two spin-1/2 fermions in a finite-length box, specifically in a singlet spin state. The participant confirms that the ground state corresponds to quantum numbers n = 1, 2, while the first excited state is n = 1, 3, and the second excited state is n = 2, 3. The participant correctly identifies that the total spin being in a singlet state implies the wavefunction is a product of a symmetric spatial part and an antisymmetric spin part.

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Homework Statement



I got two particles, spin-(1/2), in a box of finite length and I must compute the energy and wavefunctions for the three lowest states. The particles are in a singlet spin state.



Homework Equations



[tex]E = \epsilon_{1} + \epsilon_{2} +...[/tex]



The Attempt at a Solution



I got the wavefunctions down.

Just want to clarify some uncertainty here, if the ground state is just going to be for n = 1, 2, then would the first excited state be n = 1, 3, and second excited state n = 2, 3?

I am also assuming they're fermions.
 
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Also, I have assumed that since the total spin is in the singlet state, therefore the wavefunction will be the product of the symmetric spatial part and the antisymmetric spin part. Is this correct?
 

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