Quick pass on several Conformal Field Theory notes
My master research topic is about developing new numerical methods (see our paper) to analyze critical phenomena; the conformal field theory (CFT) is one of the most important languages to…
Some summaries and thoughts on the books I read
PSI18-19: Condensed Matter Review by Alioscia Hamma
February this year was a happy period. Chinese new year came on 12 Feb., so we have many small dinner parties in the dormitory. However, physics learning has never stopped.…
String theory lectures by Barton Zwiebach
Two friends of mine, Yuan Yao and Weiguang Cao, started to read the book, A First Course in String Theory by Barton Zwiebach, a few weeks ago. Barton Zwiebach is…
Computational way of understanding physics
In one of my ongoing research topic, I need to use a novel technique called automatic differentiation to take derivatives. If you never heard of automatic differentiation before, it is…
Review of angular moment in quantum mechanics
I've gradually realized that spin is used everywhere in theoretical physics and also mathematics. Let alone in particle physics, where all the material particles are described by spin-1/2, even in…
CFT notes by David Simmons-Duffin
I went through the first four chapters in a CFT notes by David Simmons-Duffin prepared for his lecture in Caltech, Ph229ab during the last few weeks. What is Conformal Field…
Symmetry and Harmonic Motion (conti.)
About two months ago, I wrote a study notes named Symmetry and Harmonic Motion on how to exploit symmetry of a system doing harmonic motion. I use a baby problem:…
西方哲学史by张志伟(The History of Western Philosophy)
This notes will be written in Chinese, since the lecture videos I watched are in Chinese. It will be easier for me to keep track of various philosophy terminologies in…
Symmetry and Harmonic Motion
Table of contentsWhat is the Problem?Two Key TheoremsThe Baby Problem: Two Particles in 1DProjection Operator into desired Representation ModeExplicit Connection to the Old Way of Solving the Problem in Classical…
PSI 2015/2016 – Condensed Matter (TCHERNYSHYOV)
I just finished all 15 video lectures of Condensed Matter Course in PSI 2015/2016 program early today. The main lecturer of this course is Professor Oleg Tchernyshyov from Johns Hopkins…