Search for tag: "hamiltonian"

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.

From  DUNCAN O'DELL 2 plays 0  

PHYSICS739_approximation_Methods2

Introduced the interaction picture

From  DUNCAN O'DELL 0 plays 0  

PHYS-4F03-class14

Hyperfine splitting. Taught by Wyatt Kirkby in 2021

From  DUNCAN O'DELL 3 plays 0  

PHYS-4F03-class13

The Zeeman effect. Taught by Wyatt Kirkby in 2021

From  DUNCAN O'DELL 14 plays 0  

28_Klein-Gordon Field and Lagrangians

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…

From  Clifford Burgess 89 plays 0  

26-Poincare Generators

Physics 4Q03 Lecture 26: This lecture works through how Poincare generators (4-momentum and the angular momentum tensor) transform in quantum relativity. A sketch is given of the argument for the…

From  Clifford Burgess 71 plays 0  

PHYS3QI3_class27

Finished going through the slides on quantum gates (QI18_Quantum_gates), including discussing alternative schemes to gate-based quantum gates (such as quantum annealing)

From  DUNCAN O'DELL 4 plays 0  

22-CoulombInteraction

Physics 4Q03 Lecture 22: This lecture recaps the previous ones and completes the interactions of a nonrelativistic charged particle to include the Coulomb interaction.

From  Clifford Burgess 43 plays 0  

21-EM couplings to charged particles

Physics 4Q03 Lecture 21: This lecture describes how the electromagnetic vector potential (ie photons) couple to nonrelativistic charged particles, constructing the interactions by `gauging' the…

From  Clifford Burgess 40 plays 0  

20-EM Interactions w Polarizable Atoms

Physics 4Q03 Lecture 20: This lecture describes how to construct interactions between electromagnetic fields and the Schrodinger fields that describe slowly moving particles. The interactions…

From  Clifford Burgess 32 plays 0  

PHYS-4F03-class26

Finished the slides on the adiabatic approximation (L18Adiabatic)

From  DUNCAN O'DELL 6 plays 0  

PHYS-4F03-class20

Started time-dependent perturbation theory (L16T_dep_PT_part1)

From  DUNCAN O'DELL 8 plays 0  

12-PositionSpace Interactions

Physics 4Q03 Lecture 12: This lecture summarizes the position space formalism of the previous lecture and introduces simple self-interactions.

From  Clifford Burgess 66 plays 0  

11-Locality2ndQuantization

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…

From  Clifford Burgess 64 plays 0  

PHYS-4F03-class12

Finished Fine structure (L9Fine_structure)

From  DUNCAN O'DELL 22 plays 0  

QFT-Tut-210201

Phys 4Q03 Tutorial for Feb 1, 2021.

From  Clifford Burgess 23 plays 0  

PHYS-4F03-Class8

Finished identical particle and started time-independent perturbation theory.

From  DUNCAN O'DELL 9 plays 0  

QFT-Tut-210118

This is the QFT tutorial for Jan 18, 2021

From  Clifford Burgess 12 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…

From  Clifford Burgess 85 plays 0  

07_Emission

Physics 4Q03 Lecture 07: This lecture applies Fermi's Golden Rule to evaluate the rate for photon emission by an excited atom. This example is also used to illustrate the phenomenon of…

From  Clifford Burgess 134 plays 0  

06_Scattering

Physics 4Q03 Lecture 06: This lecture uses the results for time-dependent perturbation theory to calculate transition rates in terms of the matrix elements of the interaction Hamiltonian, culminating…

From  Clifford Burgess 118 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.

From  Clifford Burgess 97 plays 0  

04_Fermions_Completeness

Physics 4Q03 Lecture 04: This lecture extends the notions of creation and annihilation operators to fermions, and derives the anticommutation algebra that these satisfy. The lecture also sketches out…

From  Clifford Burgess 84 plays 0  

03_Creation_Annihilation

Physics 4Q03 Lecture 03: This lecture provides the foundation of much of what follows: the definition and properties of creation and annihilation operators. These operators provide a basis in terms…

From  Clifford Burgess 133 plays 0