Non-Equilibrium Green's Function Method for Energy, Momentum, and Angular Momentum Transfer Mediated by Photons
Kavli Institute for Theoretical Physics via YouTube
Overview
Syllabus
Intro
Coulomb problem, Meir- Wingreen formula
Heat transfer between two graphene sheets
Geometry effects
Heat transfer between zigzag nanotubes or triangles
Heat transfer driven by current
System setup
NEGF preliminaries
Fluctuation-dissipation theorem in thermal equilibrium
Dyson equations
Keldysh equation
Q = 0 gauge, fundamental equation for vector potential A
Poynting theorem, steady state average
Momentum and angular momentum conservation
From surface integral to volume integral
Meir-Wingreen formula
Far field approximations
Torque and force on object
resonance effect
Force and torque from the nonequilibrium edge
Emission from graphene edge
NEGF advantage
Acknowledgements
Angular momentum emission
from a benzene molecule
Taught by
Kavli Institute for Theoretical Physics