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Showed 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.
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Introduced the interaction picture
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Finished going through the Green's function slides and started looking at path integrals.
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Introduced the propagator and began slides on Green's functions
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First class on the WKB approximation
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Physics 4Q03 Lecture 28: This lecture applies the framework of relativistic quantum fields to the simplest case of a spinless particle and constructs the Klein Gordon hamiltonian and some of its…
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Studied the Green's function approach to scattering theory (L21ScatteringTheory1)
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Finished the slides on the adiabatic approximation (L18Adiabatic)
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Finished selection rules (and thereby finished L17T_dep_PT_part3). Started new topic: adiabatic approximation (L18Adiabatic)
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Started time-dependent perturbation theory (L16T_dep_PT_part1)
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Started the WKB approximation (L13WKB_approximation.pdf)
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4Q03 Lecture 11; This lecture argues why the Hamiltonian should arise as a local function in space, and this is used to motivate the definition of position-space fields. The local form for the…
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Physics 4Q03 Lecture 05: This lecture reviews the formalisms of time-independent and time-dependent Rayleigh-Schrodinger perturbation theory for quantum mechanics.
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