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YouTube

Ab-Initio Many-Body Methods and Simulations with the Yambo Code

ICTP Condensed Matter and Statistical Physics via YouTube

Overview

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Learn ab-initio many-body methods and computational simulations using the Yambo code through this comprehensive lecture series from ICTP. Explore the theoretical foundations of many-body perturbation theory and its practical applications in computing excited states of materials. Master the transition from theoretical concepts to real computational implementations, covering key topics including the quasi-particle concept, GW approximation methods, and their specific applications to 2D materials. Delve into the Bethe-Salpeter equation derivation, understanding its physical concepts and practical implementations for studying excitonic properties. Examine advanced topics such as exciton dynamics from a many-body perspective, phonon modes, and electron-phonon coupling using density functional perturbation theory (DFPT). Gain insights into probing electronic structure through photoemission spectroscopy and understand how to move beyond independent particle schemes using linear response theory. Develop practical skills in using the Yambo code for materials science simulations while building a solid theoretical foundation in many-body quantum mechanics applied to condensed matter systems.

Syllabus

Opening Remarks
Description and goals of the school: From theoretical concepts to real computation of the excited
Introduction to Many Body Perturbation Theory
Many-bodyperturbation theory, from equations to spectroscopy
Probing the electronic structure of solids by photoemission spectroscopy (experimental lecture)
Beyond the independent particle scheme: The linear response theory
The Quasi Particle concept and the GW method
Frequency dependence in GW approximation
GW approximation in 2D materials
Derivation of the Bethe-Salpeter Equation and main physical concepts
The Bethe-Salpeter Equation: common approximations and practical implementations
Exciton dynamics from a many-body perspective
Phonon modes and el-ph coupling (DFPT)
Electron-Phonon coupling a Yambo overview

Taught by

ICTP Condensed Matter and Statistical Physics

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