Linear Response - Density-Functional Perturbation Theory - 07

Learn linear response theory and density-functional perturbation theory through this comprehensive lecture delivered by Prof. Andrea Dal Corso at ICTP in 2017. Explore the fundamental principles of how materials respond to external perturbations within the framework of density functional theory. Discover the mathematical foundations of linear response theory and understand how density-functional perturbation theory provides an efficient computational approach for calculating material properties such as phonons, elastic constants, and dielectric responses. Master the theoretical concepts that enable the prediction of dynamical and mechanical properties of solids without requiring finite displacement calculations. Gain insights into the practical applications of these methods in computational materials science and understand how perturbation theory extends the capabilities of standard DFT calculations to access a broader range of physical properties essential for materials characterization and design.