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Exercise 1 (a) Write down the general form of the Clebsch-Gordan decomposition of states lji,j2;j, m) into l/i,j2;m,m2) and vice versa. Specify explicitly the summations by indicating the variables that are summed over and their ranges (b) Use the table below to write down the Clebsch-Gordan decompositions of the states 1, m)ll3, m2)1l1,-1) and l,ml, m2)1,0)1,-1), and relate these two decompositions by usingL on the first of these states. 34. CLEBSCH-GOR DAN COEFFICIENTS, SPHERICAL HARMONICS, AND d FUNCTIONS Notatiorn :| A, Note: A square-mot ign ?s to be undrntond over enrrymdfirint, eg., fr-8/15 mad-vATK. 1/2×1/2 A, 2×1/2 4m /2+3/2 ?N?n@? 1/2/2 x1/2 Y3 3/2x1/2 01/2 2/-/ 1/2-1/3 121/3-2/3 32 2x1 3/2x1 /22 372 3/2 2/3 /S5/2/2 /241/2 1/4-3/ 1 l6/1S 16-3/10 1/20 /S /15-1//2/2 /2 /15 /6 /2-1/2-1/2 1×1 1-11/S 1/2/1 1/2-1/0 /1S 212 1-11/6 12 -1 2IS 1/2 1/10 S-3Ps5/ 02/3 - 1-12/ (c) Show that ILi, pil-ih ?.<jkPk and use it to cornpute ID,Pel. Conclude whether eigenstates of p, have definite angular momentum or not. (d) Explain why the eigenstates of Helium are either symmetric or antisymmetric in the interchange of the positions of the two electrons. Write down the unperturbed wave functions if one views the electrostatic repulsion between the electrons as a perturbation.

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Exercise 1 (a) Write down the general form of the Clebsch-Gordan decomposition of states lji,j2;j, m)...
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