Introduction to String Theory, Spring 2024

Lecture notes 

lecture1  (Introduction, Bosonic string) 

lecture2  (2d conformal field theory) 

lecture3  (2d conformal field theory, Weyl anomaly) 

lecture4  (Non-linear sigma model, Faddeev-Popov gauge fixing) 

lecture5  (BRST quantization) 

lecture6  (Bosonic string amplitudes) 

lecture7  (RNS formalism, Fermionic torus partition functions) 

lecture8  (Type II, D-branes) 

lecture9  (T-duality) 

lecture10 (Type I, orientifolds) 

lecture11 (Toroidal compactification, Heterotic string) 

lecture12 (String dualities, M-theory) 

lecture13 (Heterotic M-theory, Anomaly) 

lecture14 (Green-Schwarz Anomaly Cancellation, D-brane dynamics) 

lecture15 (D-brane dynamics and Strominger-Vafa computation) 

lecture16 (AdS/CFT)



I have taught the same course in 2017, 2021. But I have updated the lecture note by making corrections and adding more contents.


Lecture notes are written by referring to various sources without mentioning it. Comments are welcome. 

Homework

homework1

homework2

homework3

homework4

homework5

homework6

homework7

homework8

homework9

homework10

homework11



First, you should try to solve problem sets by yourself.

If you cannot solve a problem, the corresponding solution will be sent on request.