# Presentations

Comscope’s YouTube channel offers recorded talks about Comscope software. These talks were recorded at the Comscope Summer School offered in June 2021.

- Gabi Kotliar: Intro to Dynamical Mean Field Theory and Electronic Structure of Correlated Materials

Professor Gabi Kotliar from Rutgers University, the Scientific Director of Comscope, introduces the concepts and physics behind Comsuite. - Andrey Kutepov: Introduction to the FlapwMBPT Electronic Structure Code

Dr. Andrey Kutepov from Brookhaven National Laboratory introduces the physics and algorithms behind FlapwMBPT and LQSGW. LQSGW is Comsuite's electronic structure code implementing DFT, Hartree-Fock, GW, and qsGW, and is a branch of the FlapwMBPT code. Dr. Kutepov has been developing the FlapwMBPT code for more than thirty years. - Andrey Kutepov and Vincent Sacksteder: Hands-on Training with the FlapwMBPT Code, Session 1

Dr. Andrey Kutepov from Brookhaven National Laboratory shows how to run FlapwMBPT. At the beginning of this video there is a short presentation about how to run the Comsuite software on the Comsuite Virtual Machine; this presentation was given by Dr. Vincent Sacksteder, who created the Virtual Machine. - Andrey Kutepov: Hands-on Training with the FlapwMBPT Code, Session 2

Dr. Andrey Kutepov from Brookhaven National Laboratory shows how to run FlapwMBPT. - Sangkook Choi and Corey Melnick: Introduction to DFT+DMFT, qsGW+DMFT, and Continuous Time Monte Carlo

This talk has two parts. In the first part, "Introduction to First-principles and DMFT", Dr. Sangkook Choi presents the physics and algorithms of combined DFT+DMFT and qsGW+DMFT calculations, which are implemented in the ComDMFT code. In the second part, "Introduction to Continuous Time Monte Carlo (CTQMC)", Dr. Corey Melnick presents how the CTQMC approach solves strongly correlated impurity problems. Dr. Choi is responsible for the ComDMFT code which ties together LQSGW with DMFT calculations. Dr. Melnick is responsible for ComCTQC, which is Comscope’s CTQMC solver. - Sangkook Choi and Corey Melnick: Hands-on DFT+DMFT, qsGW+DMFT, and Continuous Time Monte Carlo

This talk has two parts. In the first part, "Hands-on Training with CTQMC", Dr. Corey Melnick shows how to run ComCTQMC, Comsuite's Continuous Time Monte Carlo DMFT solver. In the second part, "Hands-on Training with DFT+DMFT ,and qsGW+DMFT", Dr. Sangkook Choi shows how to use ComDMFT to run DFT+DMFT and qsGW+DMFT calculations. - Nicola Lanata: Introduction to the theory of the Gutzwiller Approximation and RISB

Professor Nicola Lanata from Aarhus University explains the approximations and algorithms behind the Gutzwiller Approximation approach to solving the strongly correlated impurity problem. Prof. Lanata has been instrumental in developing the theory behind Comscope’s Gutzwiller Approximation impurity solver. - Yongxin Yao: Hands-on Training with DFT + Gutzwiller Approximation and qsGW + Gutzwiller

Dr. Yongxin Yao from the Ames Laboratory shows how to use Comscope’s ComRISB software to run DFT + Gutzwiller Approximation and qsGW + Gutzwiller Approximation calculations. Dr. Yao wrote both the CyGutz Gutzwiller Approximation impurity solver, and also ComRISB which integrates CyGutz with LQSGW.

- Successes and challenges in the electronic structure of correlated materials: towards theoretical spectroscopy and materials design - Gabi Kotliar (Given on June 14, 2022.)
- From DFT+DMFT to LQSGW+DMFT and Full GW+EDMFT: application to materials - Sangkook Choi (Given on June 16, 2022.)
- Hands-On Training on COMSUITE- Sangkook Choi (Given on June 16, 2022.)
- Quantum Embedding Methods: GPU Acceleration & Embracing Multiple Frameworks - Corey Melnick (Given on June 16, 2022.)
- Quantum-embedding formulation of the GA/RISB equations - Nicola Lanata (Given on June 16, 2022.)
- Introduction to the FlapwMBPT Code - Andrey L. Kutepov (Given on July 21, 2021.)
- FlapwMBPT: Input Variables - Andrey L. Kutepov (Given on July 22, 2021.)
- Introduction to First-principles and DMFT - Sangkook Choi (Given on July 23, 2021.)
- Continuous Time Quantum Monte Carlo (CTQMC) - Corey Melnick (Given on July 23, 2021.)
- Hands-on ComCTQMC - Corey Melnick (Given on July 23, 2021.)
- Quantum-embedding Formulation of the GA/RISB Equations - Nicola Lanatà (Given on July 24, 2021.)
- ComRISB Tutorials - Yongxin Yao (Given on July 24, 2021.)
- Free Energy and Force Formulation in LDA+Gutzwiller - David Guzman (Given in February 2019.)
- Gutzwiller Rotationally Invariant Slave-Boson method and its combination with Density Functional Theory -Yongxin Yao (Given in February 2019.)
- ComRISB Tutorials - Yongxin Yao (Given in February 2019.)
- Gutzwiller method with machine learning and quantum computing - Yongxin Yao (Given in February 2019.)