Concept

Perturbation theory (quantum mechanics)

Related lectures (31)

Renormalization Group: Basic Structure and Counterterms

Covers the Renormalization Group and perturbation theory breakdown.

Quantum Perturbation Theory: Time-Dependent Part 1

Covers the basics of time-dependent perturbation theory in quantum mechanics.

Instanton Prefactor and Zero Mode

Explores instantons in quantum field theory, focusing on the instanton prefactor and the role of the zero mode.

Nonlinear Susceptibility: Perturbative Expansion

Explores nonlinear optics with two-level systems, perturbative expansion, and the dressed-state picture in the quantized field.

Spin relaxation mechanism

Explores spin relaxation mechanisms, perturbation theory, relaxation rates, momentum conservation, phonon drag, electron-magnon interactions, and symmetries.

Borel Resummation: Techniques and Applications

Covers the theory and applications of Borel resummation in physics.

Scattering Theory Overview

Explores scattering theory, S-matrix, T-product, perturbation theory, and Schrödinger equation solutions.

Trans-series in Quantum Field Theory: SVZ Approach and Applications Log in to Mediaspace to watch this video

Discusses the SVZ sum rules and their application in quantum field theory, focusing on trans-series and non-perturbative corrections.

Trans-series in Quantum Field Theory: SVZ Approach Overview Log in to Mediaspace to watch this video

Discusses the SVZ method for calculating non-perturbative corrections in quantum field theory.

Many Body Perturbation: Theory and Equations Log in to Mediaspace to watch this video

Covers Many-Body Perturbation Theory as a method to treat electron correlation effects.

Quantum Perturbation Theory Log in to Mediaspace to watch this video

Introduces quantum perturbation theory and its systematic approach to solving perturbed quantum systems.