Search for tag: "perturbation"

PHYSICS739_approximation_Methods3

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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From  DUNCAN O'DELL 2 plays 0  

PHYSICS739_approximation_Methods2

Introduced the interaction picture

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PHYS739_Approximation_Methods1

Started perturbation theory. Gave example of quadratic Stark shift of ground state.

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PHYS-4F03-class14

Hyperfine splitting. Taught by Wyatt Kirkby in 2021

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From  DUNCAN O'DELL 5 plays 0  

PHYS-4F03-class13

The Zeeman effect. Taught by Wyatt Kirkby in 2021

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From  DUNCAN O'DELL 14 plays 0  

PHYS-4F03-class24

Used first order time-dependent perturbation to study the interaction between atoms and incoherent light (L17T_dep_PT_part3)

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PHYS-4F03-class23

Finished going through the slides L17T_dep_PT_part2 which included perturbations with harmonic time dependence, including the illumination of an atom by a laser. Started the next set of slides…

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From  DUNCAN O'DELL 5 plays 0  

PHYS-4F03-class22

Started the set of slides L17T_dep_PT_part2 which applies time dependent perturbation theory to various examples.

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PHYS-4F03-class21

Derived 1st order time-dependent perturbation theory (L16T_dep_PT_part1)

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PHYS-4F03-class20

Started time-dependent perturbation theory (L16T_dep_PT_part1)

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From  DUNCAN O'DELL 8 plays 0  

QFT-Tut-210128

Phys 4Q03 Tutorial for Jan 28, 2021. (This one mistakenly has a music track appended from a playlist that was playing when I was setting up and which I forgot to turn off because i could not hear it…

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From  Clifford Burgess 37 plays 0  

PHYS-4F03-class11

Finished slides L8DegeneratePerturbationTheory and started applications of perturbation theory in atomic physics (fine structure)

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From  DUNCAN O'DELL 12 plays 0  

PHYS-4F03-class10

Started degenerate perturbation theory (L8DegeneratePerturbationTheory).

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PHYS-4F03-Class9

Finished L7TimeIndepPerturbationTheory

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From  DUNCAN O'DELL 5 plays 0  

PHYS-4F03-Class8

Finished identical particle and started time-independent perturbation theory.

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From  DUNCAN O'DELL 9 plays 0  

09-CoherentState

Physics 4Q03 Lecture 09: This lecture introduces coherent states, and derives them as the eigenstates to which a bosonic system is often driven in the presence of persistent stimulated emission. The…

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From  Clifford Burgess 89 plays 0  

2011-OpenEFTsGravity-Yale-Burgess

Wilson to Lindblad: Late-time Obstacles to Reliable Calculations with Horizons (and how Open EFTs can help). This talk describes how Open Effective Field Theories can be used to deal with the…

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From  Clifford Burgess 52 plays 0  

05_PtbnTheory

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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From  Clifford Burgess 108 plays 0