Condensed Matter Seminar: Stochastic variational method to exciton and trion systems

Ruipeng Li (MPQ)
The stochastic variational method (SVM) complemented with the use of explicitly correlated Gaussian basis function is one of the most powerful approaches used for calculating various properties of few body systems.

Ruipeng Li (MPQ)
Online Seminar
Mon 11. May 2020, 11:30 am (MEZ)

Abstract:

The stochastic variational method (SVM) complemented with the use of explicitly correlated Gaussian basis function is one of the most powerful approaches used for calculating various properties of few body systems. Despite its conceptual simplicity, the method offers great flexibility, high accuracy and can be used to study diverse quantum systems, ranging from small atoms and molecules to light nuclei. In this talk, I will give a brief introduction of SVM as well as its application to excitons and trions in transition metal dicalcogenides (TMD) in finding the energy spectrum and wavefunction plots. Additionally, a comparison between SVM and discrete variable representation (DVR) results will be presented. Finally, I will talk a little bit about how SVM might apply to few body polaron problem.