Search for media from: "Clifford Burgess"

2111 - Naturally Relaxed (Yoga) Models of Dark Energy - MIAPP

Talk given to the MIAPP workshop Dark Energy 2 on Nov 16, 2021

From  Clifford Burgess 4 plays 0  

2108-Hotspot-Copernicus

Influence Through Mixing: Hotspots as Cartoons of Quantum Black Holes. Seminar given to the Copernicus international online seminar series.

From  Clifford Burgess 4 plays 0  

2108-Inflation Overview-COSMO2021

This is a short personal overview of some topics in inflationary cosmology. Unfortunately the video froze during the first few slides, but it stops doing so not too far in. (Apologies for this.)

From  Clifford Burgess 6 plays 0  

2104-UVClues-Imperial-Burgess

EFTS, Gravity and Clues from the UV: Theory Group Seminar for Imperial College April 2021

From  Clifford Burgess 55 plays 0  

Final Tutorial

Physics 4Q03 Tutorial Weds April 14: This is the final tutorial spent taking up part of the midterm and answering questions. Good luck with your exams!

From  Clifford Burgess 75 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 85 plays 0  

27-Microcausality

Physics 4Q03 Lecture 27: This lecture describes the logic that determines which fields can be used to represent particles of different spins, and describes the requirement of microcausality and why…

From  Clifford Burgess 84 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 70 plays 0  

25 Symmetries in QM

Physics 4Q03 Lecture 25: This lecture finishes the general review of special relativity in terms of 4-vectors and reviews the treatment of symmetry in quantum mechanics.

From  Clifford Burgess 58 plays 0  

24-Relativity

Physics 4Q03 Lecture 24: This lecture summarizes some aspects of special relativity, including its formulation in terms of the Lorentz group.

From  Clifford Burgess 54 plays 0  

23-CasimirProb-StartOfRelativity

Physics 4Q03 Lecture 23: This lecture starts with a summary of renormalization for Casimir energy in a waveguide, and closes with the start of a summary of Special Relativity.

From  Clifford Burgess 42 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 42 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  

19-Casimir Energy

Physics 4Q03 Lecture 19: This lecture evaluates the Casimir energy for the vacuum fluctuations of a field between two plates on which the field vanishes, showing that it is UV finite. Along the way…

From  Clifford Burgess 48 plays 0  

18-MorePhotonsEM

Physics 4Q03 Lecture 18: This lecture continues the previous one on photons in electromagnetism, and provides a sermon about UV and IR divergences and why you can use any regularization you like to…

From  Clifford Burgess 39 plays 0  

17-PhotonsInQED

Physics 4Q03 Lecture 17: This lecture continues the discussion of quantizing the electromagnetic fields and shows how field energy and momentum can be written in terms of photon creation and…

From  Clifford Burgess 48 plays 0  

16-MaxwellsEqs

Physics 4Q03 Lecture 16: This lecture provides a whirlwind review of Maxwell's equations and their solutions in terms of electromagnetic waves. This allows an introduction to gauge invariance…

From  Clifford Burgess 67 plays 0  

15-Bogliubov

Physics 4Q03 Lecture 15: This lecture describes the leading corrections to the classical BEC, using a Bogoliubov transformation to identify the spectrum of quasiparticle fluctuations about the…

From  Clifford Burgess 57 plays 0  

14-Semiclassical BEC

Physics 4Q03 Lecture 14: This lecture continues the discussion of Bose Einstein condensation and shows how a semiclassical analysis can allow a calculation of the optimal density of condensed…

From  Clifford Burgess 43 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 65 plays 0  

13-BE Condensation

Physics 4Q03 Lecture 13: This lecture reviews how to set up averages with statistical mechanics, translating the grand canonical ensemble into the language of occupation number. This is used to…

From  Clifford Burgess 44 plays 0  

QFT-Tut-210222

Physics 4Q03 Tutorial Feb 22, 2021

From  Clifford Burgess 32 plays 0  

QFT-Tut-210211

Physics 4Q03 Tutorial Feb 11, 2021

From  Clifford Burgess 18 plays 0