Physics 582

General Field Theory

Fall Semester 2021


Welcome to the first semester of our two-semester long course in Quantum Field Theory!. These are complicated times and we will do our best to make things work as normal as it will be possible. here are a few elementary things that we will do. If for some reason someone does not comply with these simple rules I will ask this person to leave to lecture room at once. I am fully vaccinated against Covid-19. I know that most of you (or perhaps even all of you?) are fully vaccinated as well which is a requirement to attend classes. As a precautionary measure I will be getting tested at least once a week and, although it is not required if you are vaccinated, I want to encourage you to do it as well. It is a chore but this is a simple way for all of us to be safe. At the beginning of each class I will show you my mobile phone with the Safer Illinois app showing that I tested negative. I will ask all students in the class to have your mobile phones on your desks so we can check that we are all testing negative. I will also ask all of you to sit six feet apart from each other and to wear your masks at all times and so will I.

Provided the situation on campus remains under control my lectures will be in person. Since I believe you are all here I will not record my lectures unless we have to go remotely. The reason is that it is bad enough to teach with a mask on but it literally difficult to record it and to be understandable. I tested it and I cannot understand what I say. Last Academic Year I taught this course by zoom and those lectures are recorded. Although I do no repeat myself verbatim you may find it useful to watch my recorded Fall 2020 lectures. They can be found in my channel in MediaSpace:

On the other hand, my office hours will be done remotely by zoom. I will send a separate mass email with the zoom link for the office hours. Similarly, the TA's office hours will also be done by zoom. Our two TA's (Matthew O'Brien and Marcus Rosales) will be sending you their separate zoom links.

We will have seven (7) problem sets, with the last one playing the role of a take home final exam. We will have one set roughly every two weeks or so. They take a fair amount of work so you are strongly encouraged to begin working on them as soon as they are posted. The problem sets are a key part of this course!

All homework sets are due on 9:00 pm (US Central Time) of the assigned due date. Below you will find the homework sets that you will need to download with a clearly stated deadline (all times are in US Central Time). You will have to prepare your solutions using LaTeX and you will have to upload your solutions to a website indicated below. It is fine to upload a scanned file of a handwritten solution provided it is clearly legible. This means that your solutions must not contain anything crossed out and written with dark pen with large enough script on doubly spaced paper with the equations presented (and not written as part of a line text) that it can be easily read. You should not email your solutions! Unreadable solutions will not be graded. No late solution sets will be accepted unless you prearrange this beforehand with the TA and with me. There will be a 20 percent grade penalty for late solution sets. The website where you will be able to upload your solutions (and where you will also be able to download the graded set) is accessed through this link. You should NOT put your solutions in the Physics 582 box located in the Loomis/MRL Interpass

HW set No.1 was uploaded on Sunday August 22, 2021. It will be due on Friday September 10, 2021, at 9:00 pm.

The solutions to HW set 1 were posted on Wednesday September 22, 2021.

HW set No.2 was uploaded on Sunday September 12, 2021. It will be due on Friday September 24, 2021, at 9:00 pm US Central Time.

The solutions to HW set No.2 were posted on Friday October 1, 2021.

HW set No.3 was uploaded on Friday September 24, 2021. It will be due on Friday October 8, 2021, at 9:00 pm US Central Time.

The solutions to HW No.3 were posted on Wednesday October 13, 2021.

An erratum for the finite temperature propagator was posted on Monday October 4, 2021.

HW set No. 4 was posted on Friday October 8, 2021. It is due on Friday October 22, 2021, at 9:00 pm US Central Time.

New deadline: Monday October 25, 2021, 9:00 pm US Central Time.

The solutions to HW set No. 4 were posted on Wednesday October 27, 2021.

HW set No.5 was posted on Sunday October 24, 2021. It is due on Friday November 12, 2021, at 9:00 pm US Central Time.

There was a misprint in question 4 of problem 2 (eq. 16). I corrected the file.

The solutions to HW set No. 5 were uploaded on Thursday November 18, 2021.

HW set No.6 was uploaded on Friday November 12, 2021. It is due on Wednesday December 1, 2021, at 9:00 pm Central Standard Time.

Things have been going more slowly in my lecture than I anticipated and I will not be able to cover the material for HW set 6 before Wednesday next week (the current deadline of the HW set). For this reason I will extend the deadline till Saturday December 4, 9 pm US CST.

Since this term we have not been able to cover Linear Response Theory in the lectures questions 2, 3 and 4 of problem 2 in HW set 6 will be considered as Extra Credit. Nevertheless you should try them!

The solutions to HW set No. 6 were posted on Tuesday December 7, 2021.

The last problem set, HW7, will play the role of the (take home) Final Exam for Physics 582. It was uploaded on Saturday December 4, 2021. It us due on Friday December 17, 2021, at 9:00 pm US Central Time. As such you must upload your solutions before the deadline. As it is the Final Exam there will be no extensions. Also you must upload your solutions in order to get a grade for Physics 582, regardless of what you have done in the homeworks. If you do not upload your solutions you will get an F. Your solutions must be uploaded before the deadline to the my.physics website for uploads for Physics 582. This can be done either by writing your solutions in LaTeX and sending me the pdf file, or by scanning your handwritten solutions and sending me them as a pdf file. If you choose the latter option you will have to make sure that the scanned file is clearly legible and this will require the use of a dark pen and clear handwriting. Your solutions will have to be uploaded to the my.physics website for Physics 582 (as you have done with the homeworks) before Friday December 18 9:00 pm US central Time, without exception. No solutions will be accepted after that.

Last updated 12/7/2021