Recent content by stefano

Ok, but in this case is tau=1/2 for protons and tau=-1/2 for neutrons?

I have a problem in understanding the dependence by isospin of strong interaction. In this potential one have a lot of operatorial terms which include central, spin-spin, tensor force, spin-orbit terms, and all this four terms multiply by a factor isospin-dependent (tau_i dot tau_j). I don't...

I don't know how to treat a center of mass corrections. Suppose to have a Slater determinant of N single-particle wavefunctions. If I make a traslation to center of mass of system, this is mean to move all particle in the following way: R_i ---> R_i - (sum_j {R_j}/N) But how have I to...

I am agree with you. In fact I made bad the question, because my original problem is that I need to write eigenstate of J for three particles. Then J=j_1+j_2+j_3; to do this I have to fix the projection (for example M=1/2) and the three sets of single particles for which M=1/2 are (5/2,1/2...

And so? What is the trivial answer?

Who knows the formula to calculate the eigenvalues of total angular momentum between two different states? In particular, what is the matrix element of <S, L, J, M_J | J^2 | S', L', J', M'_J> ? Thank's...

Or does someone know some utility or program to do this?

I need to write an eigenstate of total angular momentum of three particle. In particular I use the j=5/2 orbital of single-particle (with six projections...) and I have to construct eigenstate for J=j_1+j_2+j_3 to write down anti-symmetric eigenstates. For example, I tried to construct...

Ok, but is it the same way to couple j_12=j_1+j_2 and then J=j_12+j_3 or first j_23=j_2+j_3 and then J=j_1+j_23 ?

How can I couple three angular momentum? I am confused about this, in fact I don't understand how can I do this... I need to build eigenstates of total angular momentum for three particles J=j_1+j_2+j_3, someone can help me? Thank's