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From Sara Brandao
15 plays 0By: Sara Brandao, Joshua, Hassan, Sophia -
From DUNCAN O'DELL
4 plays 0Wigner-Eckart theorem. Note: there is no recording for PHYSICS739_AngularMomentum6. -
From DUNCAN O'DELL
0 plays 0Looked at general case of adding two angular momenta j1 and j2, and introduced the recursion method. -
From DUNCAN O'DELL
0 plays 0Started studying the addition of angular momentum using the lowering operator method. Introduced direct sums and direct products of Hilbert spaces for the coupled and… -
From DUNCAN O'DELL
4 plays 0Completed Euler angles, started considering rotation operators for general values of j. -
From DUNCAN O'DELL
1 plays 0Group theory of rotations: SO(3) versus SU(2). Started Euler angles. -
From DUNCAN O'DELL
1 plays 0Finished slides on "What is a spin?" -
From DUNCAN O'DELL
0 plays 0Finished off this part of the course by looking at harmonic perturbations and also 2nd order time-dependent perturbation theory. Started some slides on ``What is a… -
From DUNCAN O'DELL
0 plays 0Generalized our treatment of first order transitions to include a slow switch on of the perturbation. -
From DUNCAN O'DELL
0 plays 0Showed how to find transition amplitudes from the Dyson series. Began analyzing 1st order perturbations constant in time except for being switched on at t=t0. -
From DUNCAN O'DELL
0 plays 0Introduced the interaction picture -
From DUNCAN O'DELL
0 plays 0Started perturbation theory. Gave example of quadratic Stark shift of ground state. -
From DUNCAN O'DELL
1 plays 0Discussed how to include electromagnetic fields in the Schrodinger equation and path integrals, and also covered the Aharonov-Bohm effect -
From DUNCAN O'DELL
0 plays 0We calculated the propagator for the simple harmonic oscillator using the Feynman path integral approach. -
From DUNCAN O'DELL
1 plays 0Finished going through the Green's function slides and started looking at path integrals. -
From DUNCAN O'DELL
1 plays 0Introduced the propagator and began slides on Green's functions -
From DUNCAN O'DELL
0 plays 0Discussed how to obtain the WKB connection formulae using both the transitional approximation and the complex method. Also applied the WKB method to quantize wave… -
From DUNCAN O'DELL
2 plays 0First class on the WKB approximation -
From DUNCAN O'DELL
1 plays 01) Discussed the Heisenberg equation of motion applied to the simple harmonic oscillator 2) Discussed coherent states -
From Victoria Orfei
0 plays 0 -
From DUNCAN O'DELL
2 plays 0Mixed states and the density operator. Taught by Wyatt Kirkby in 2021