Recorded 01 April 2022. Timothy Gould of Griffith University presents "Multiscale approaches to dispersion modelling" at IPAM's Multiscale Approaches in Quantum Mechanics Workshop. Abstract: Van der Waals dispersion physics is mostly highly local and able to be treated in simple ways. However in materials with one- or two-dimension interactions can become coupled at long range. We will highlight some of the difficult physics behind this behavior, and discuss success and limitations of mathematical techniques used to model them. Some illustrative cases will also be considered. Learn more online at: http://www.ipam.ucla.edu/programs/workshops/workshop-i-multiscale-approaches-in-quantum-mechanics/?tab=schedule