2 Quantum Mechanics v2 

Welcome.

Did you have a QM course before you took the course with Professor Weinberg?

@@markweitzman no I did not. I only had taken introduction to mechanics and E&M beforehand. And I was taking Wave Motion alongside. This class was also a prerequisite for QM. However, I have talked to students who took Modern Physics with other Professors and they generally say it's was an easy class.

@@erickgmtz97 But Weinberg's book is quite difficult - especially if you have not had QM. The first couple of chapters are ok, but the last few chapters are quite difficult.

I agree on Ballentine. Best graduate textbook. However, some remarks are in order: 1- Ballentine refuses the collapse postulate in chapter 8 and 9. 2- The quantum Zeno effect (he calls it the watched pot) is wrongly explained. It's a well known effect and experiments confirm it. Unless you have solid background in quantum mechanics, this book is not for you. Btw, best undergraduate textbook is The physics of quantum mechanics by James binny (Oxford)

@@user-bk2xv1il1h Ballentine is an acceptable viewpoint - there are really no experimental differences just interpretations. Have you seen Barton Zwiebach's book or online courses?

I have already done this in video 5 of my playlist on physics textbooks. A version 2 will be coming shortly.

Well either way, the student will eventually have to integrate and understand well the different pictures (Schrodinger, Heisenberg, Dirac), representations (coordinate, momentum), and formalisms (operator, path integral, density matrix) - this is part of what makes QM difficult. I think there are advantages to both starting with spin (discrete and easy to calculate and interpret) as Feynman originally did, and the traditional wave function approach (familiar - and more directly applicable).

If you are going to learn physics on your own, you should be able to figure out which order to pursue and what to study. Everyone learns differently. The world is yours to search (with google of course), you can find the curriculum of any of the great universities (Caltech, MIT etc.) and see what order they use. A large part of of pursuing studies in an intelligent way is to know what you know, and what you don't know, and how to learn what you don't know.

@@markweitzman thanks sir

@@navjot5445 See for example www.pma.caltech.edu/courses/department/ph, and pma.caltech.edu/documents/1393/Typical_Course_Schedule.pdf, pma.divisions.caltech.edu/documents/1391/Condensed_Matter2C_QI2C_AMO_Track.pdf, pma.caltech.edu/documents/1392/High_Energy_Track.pdf

I am well aware of the books over my head - that is sort of a joke (as I could easily switch the books image and my camera picture). As you can see by many of my serious videos on substance (e.g. the QFT videos), I am not that interested in production values per se. Most of the videos I make are a way to force myself to make Latex notes (and other notes) and to review materials for myself - as I have a very limited audience. Remember I am retired, and while my physics studies are very serious - my physics videos are not meant to be professional in appearance - that takes a lot of work.

@@markweitzman Trying to fill all the blank spaces is one of the most common mistakes (I certainly make it myself sometimes) but nobody comes here to enjoy good graphic design, no big deal. On the other hand, it is not too difficult to figure out the personal context of the videos but, again, no problem whatsoever.I didn't find the solutions of the "exercices for the Feynman lectures", but you solved them. Your book recommendations are also very interesting. I go deeper with one out of four books and this leads to more discoveries. The language of youtube (number of likes, views...) doesn't say too much about the experience of your viewers while watching your videos, I thought it may be OK to fill the gap myself saying something in English.

Welcome to the channel.

No - I have plans just for quantum field theory and maybe some group theory.

That's also helpful. But in the books series of videos please do one video on popular physics books

Next video covers classical physics, electromagnetism, and statistical mechanics

Not that familar with it - definitely probably prefer Feynman to start, Zwiebach's QM book.

Not familiar with book.

I will think about it. Years ago I used to read all the popular physics books that came out, but recently I have not read that many.

@@markweitzman yes, please think about it. I'm a student of physics still i like reading popular science( physics) books a lot.

Not sure if this is what you want but there is a bio of me on the piazza sites listed above, which I repeat below: Hi - my name is Mark Weitzman. I am 66 years old, and since the mid-80's, I have been a High Limit Professional Poker Player, long before it became popular on the internet and cable TV. I am mostly a cash game player, and I have played in some of the largest games in the world, and with some of the most famous players including Doyle Brunson, Chip Reese, and Gus Hansen. For the last 5-10 years, I have been semi-retired, and have concentrated on my true passion in life which is theoretical physics. In college I earned a B.S. in physics and mathematics. In a period of temporary insanity, I went to law school , mostly played poker and skipped classes, but still managed to pass the bar without any study. I am proud to say, I never practiced for a single day. I worked several years in incredibly boring jobs as a consulting actuary, when I decided to end my short career of working for a living, and entered the Phd. program in Theoretical Physics at Caltech. I did well enough on the placement exams and was encouraged and decided to take the most advanced courses. For reasons that I do not quite understand today (perhaps in poker language, I was not all-in), I was blown away in the quantum field theory, high energy, and string theory courses. After two years, I decided to pursue other opportunities and left Caltech with a M.S. in Physics. I started my professional poker career playing lowball draw at the Bicycle Club in Southern California, and holdem/stud at the WSOP in Las Vegas. I have accelerated my theoretical physics studies in the last few years (better books are available today along with the internet), and have also participated in many online MOOC's. I have been staff for the following MOOC’s (and worked with Professor Zwiebach on editing his book on Mastering Quantum Mechanics Essentials, Theory, Applications). MITx 8.04x Quantum Mechanics MITx 8.05x Mastering Quantum Mechanics MITx 8.06x Applications of Quantum Mechanics I have also been a CTA for the following MOOC’s: MITx 18.031x Introduction to Differential Equations MISiSx 18.11x Complex Analysis with Physical Applications HarvardX Chem160 The Quantum World MITx 8.370.2x Quantum Information Science I Part 2 MITx 6.431x Probability - The Science of Uncertainty and Data MITx 18.6501x Fundamentals of Statistics MITx 8.03x Vibrations and Waves MITx 6.86x: Machine Learning with Python-From Linear Models to Deep Learning I have started a “school” on piazza: markweitzman’s wannabe a theoretical physicist school, and I am maintaining the following “courses/blogs" on piazza (under Selected Term: Other). 8.323 Quantum Field Theory - A Student’s Perspective Term: Other; Access Code: QFT PH 200 Topics in Theoretical Physics Term: Other; Access Code: Ph200 CS 100 Scientific Programming, Machine Learning, Quantitative Finance etc. Term: Other; Access Code: cs100

@@markweitzman Thank you for the reply. It was my bad, I did not click on the link, because it was listed as a pizza site. I checked your "about me" on youtube channel tab, and found nothing giving me an idea about your background in physics. I did google your name, and found a vague reference of a Caltech PhD, but was unsure if it was really you. SInce you were talking about higher level physics books, all I needed is a two word intro like "Caltech MS" or "Caltech PhD". Out of habit, I often listen to the experts in the web. If I am unsure about the speaker, I usually skip the video.

@@bongclown9302 What about a piazza site would lead you to not clicking it? I can certainly add what I had above to the about me in the youtube, but for me I would rather have individuals look at my piazza sites, which have quite a bit more information and resources than can be made available on RU-vid.

@@markweitzman No particular reason. For random internet articles/videos, i may or may not click; its a simple hit or miss.