Thanks for sticking with these uploads Nick. I've referenced your videos for the past few years as I've climbed the ladder from undergrad QM all the way through grad QM and am now taking QFT. I'm glad to be able to have these reference videos. I'm an auditory learner, so they really make a big impact on my life!
Right. And thats why the EOM at the end comes wrong. The space derivative term in the 2nd last line should have negative sign. It should be "+", I think. Then the EOM comes with correct signature.
@@rafidbuksh9554 I'm not sure that the sign change in the product rule will have an impact on the final EOM. A "+" would lead to a trailing "-" in both integrals (discussed from 20:07 to 21:14) and both are finally 0. Thus, my question was just to understand, whether this a typo in the product rule or whether I misunderstood sth.
@tomgraupner171 In the first EOM, the contribution from this term is zero, but in the second EOM, this term results in the opposite sign in the momentum term (at the end of the video). Box operator should be: \dot{\phi}^2 "-" \grad{\phi} \grad{\phi}. But the result in the video comes with positive sign at the end.
@@rafidbuksh9554 Excellent!! I just accepted the sum of the time-derivative**2 and the Nable**2 to be "box". And it's not - you are right: needs to be the diff. And it will become such a diff with the correct product-rule. Thanks a lot for your help. It's highly appreciated.
How many lectures do you think are necessary to cover all the program you're proposing to give ? My classes begin in march and I will take QFT, so I wanted to watch this full course before I start QFT at the uni
I honestly don't know how many lectures it will take. I will do my best to make as many as I can before march, but I don't think I will be able to have the entire course done by then
Honestly, I am not sure. I plan to cover most of it to setup a Later course in General Relativty and then string theory, but I am struggling to find enough time to property prepare the classes. Ill do my best to keep this series going!
Thanks for sticking with these uploads Nick. I've referenced your videos for the past few years as I've climbed the ladder from undergrad QM all the way through grad QM and am now taking QFT. I'm glad to be able to have these reference videos. I'm an auditory learner, so they really make a big impact on my life!
please upload the lectures on Quantizing Dirac field and maxwell's langrangian
We back on the dark background, lovely!
Wonderful. Thanks a lot. @ 17:35 I would have expected a "+" within the product-rule - why is this a "-" ?
Right. And thats why the EOM at the end comes wrong. The space derivative term in the 2nd last line should have negative sign. It should be "+", I think. Then the EOM comes with correct signature.
@@rafidbuksh9554 I'm not sure that the sign change in the product rule will have an impact on the final EOM. A "+" would lead to a trailing "-" in both integrals (discussed from 20:07 to 21:14) and both are finally 0. Thus, my question was just to understand, whether this a typo in the product rule or whether I misunderstood sth.
@tomgraupner171 In the first EOM, the contribution from this term is zero, but in the second EOM, this term results in the opposite sign in the momentum term (at the end of the video). Box operator should be: \dot{\phi}^2 "-" \grad{\phi} \grad{\phi}. But the result in the video comes with positive sign at the end.
@@rafidbuksh9554 Excellent!! I just accepted the sum of the time-derivative**2 and the Nable**2 to be "box". And it's not - you are right: needs to be the diff. And it will become such a diff with the correct product-rule. Thanks a lot for your help. It's highly appreciated.
How many lectures do you think are necessary to cover all the program you're proposing to give ? My classes begin in march and I will take QFT, so I wanted to watch this full course before I start QFT at the uni
I honestly don't know how many lectures it will take. I will do my best to make as many as I can before march, but I don't think I will be able to have the entire course done by then
This is great, Thank you so much. Will you give a lecture on Abelian gauge theory?
I plan to once we get to it!
Hi Nick. The book by Peskin & Schroeder has 22 chapters. Any idea how far you will go in this series?
Honestly, I am not sure. I plan to cover most of it to setup a Later course in General Relativty and then string theory, but I am struggling to find enough time to property prepare the classes. Ill do my best to keep this series going!
@@NickHeumannUniversity Okay, that's an honest answer. But string theory? Really?
@@jacobvandijk6525 Yes, why? I took a great course on it while doing my master's, and I'd love to share it
Great