tag:blogger.com,1999:blog-8666091.post113871652835958681..comments2021-05-03T21:54:48.969+02:00Comments on The Reference Frame: Quantum field theory textbooksLuboš Motlhttp://www.blogger.com/profile/17487263983247488359noreply@blogger.comBlogger9125tag:blogger.com,1999:blog-8666091.post-5425003436493559682013-09-30T23:03:40.598+02:002013-09-30T23:03:40.598+02:00Oh, thanks Mephisto for these reviews and suggesti...Oh, thanks Mephisto for these reviews and suggestions, these books look very promising :-).<br /><br /><br />I know and agree that the Demystified books (alone) are not appropriate for getting a real deep understanding or teach one doing "real world calculations". But for topics I did not take university courses on, they gave me generally a good first impression about the topics at a slightly deeper than equation-free popular level ...<br /><br /><br />CheersDilatonnoreply@blogger.comtag:blogger.com,1999:blog-8666091.post-25733411652952280802013-09-30T22:32:01.831+02:002013-09-30T22:32:01.831+02:00@Dilaton. Maybe a little late, but I would recomme...@Dilaton. Maybe a little late, but I would recommend this book. <br /><br />http://www.amazon.com/First-Book-Quantum-Field-Theory/dp/1842652494/ref=la_B001KICYBE_1_1?s=books&ie=UTF8&qid=1380572191&sr=1-1<br /><br />It doesn't use the path integral approach but the canonical approach - Fourier decomposition of the field in terms of creation and anihilation operators, derivation of propagator from vacuum expectation value, derivation of Feynman diagrams from S-matrix and Wick's theorem. To understand QFT, what you really need to understand is where the Feynman diagrams come from and if you follow this book, it will explain you just that in the fist 6 chapters. After that it shows you exactly how to calculate things - decay rates and cross sections. In later chapters it deals with renormalization, gauge theories etc. The book is not easy but it is managable with patience.<br /><br />I must say that I own the Demystified QFT book also but I do not like it. IMHO it doesn't teach you the real stuff. It is all simplified to the point of being useless. It shows you the recipe how to set up an integral from a Feynman diagram, but doesn't really motivate why it is so and hence it is shallow. The path integral formulation is imho not good for a beginning. You have to compute crazy stuff like the Grassmann integrals - integrals of Grassmann numbers which are not even numbers but some crazy mathematical trick<br /><br />Another book to try might be this one<br /><br />http://www.amazon.com/Student-Friendly-Quantum-Field-Theory/dp/0984513922/ref=pd_sim_b_1<br /><br />Here are some sample chapters to check if you like the style. <br /><br />http://www.quantumfieldtheory.info/Mephistonoreply@blogger.comtag:blogger.com,1999:blog-8666091.post-84815467103109848302013-08-09T21:36:09.190+02:002013-08-09T21:36:09.190+02:00I anyone interested in quantum field theory should...I anyone interested in quantum field theory should look into "Fields of Color: The theory that escaped Einstein" by Rodney Brooks. it is not a textbook, but it is a great introduction to quantum field theory in layman terms.Asher Kirschbaumnoreply@blogger.comtag:blogger.com,1999:blog-8666091.post-507804033415369942012-11-05T12:49:56.768+01:002012-11-05T12:49:56.768+01:00i know deep down things by Bruce Schumm is easy if...i know deep down things by Bruce Schumm is easy if you have not read itGeorge Christodoulideshttp://www.facebook.com/george.christodoulides.71noreply@blogger.comtag:blogger.com,1999:blog-8666091.post-65660090257798761552012-11-05T12:42:54.676+01:002012-11-05T12:42:54.676+01:00Dear Dilaton, that's a great question. I think...Dear Dilaton, that's a great question. I think that there are many folks who would prefer a book of the kind you describe. However, I don't know the right answer. You may still want to try some of the most conventional textbooks, like Peskin Schroeder, because I am worried that all the "special spirit" books from Weinberg to Zee etc. are counterindications.Luboš Motlhttp://motls.blogspot.com/noreply@blogger.comtag:blogger.com,1999:blog-8666091.post-48303114985581851812012-11-05T12:27:32.290+01:002012-11-05T12:27:32.290+01:00Thanks George,
QFT Demystified was quite appropr...Thanks George,<br /><br /><br />QFT Demystified was quite appropriate for me :-), and now I'm looking for something to go further from the starting point I have. From the Nutshell I quite liked the path integral approach to derive Feynman diagrams, I think I like it a tad better than the Dyson operator approach; I dont know why.Dilatonnoreply@blogger.comtag:blogger.com,1999:blog-8666091.post-24555240452087423432012-11-05T12:16:27.057+01:002012-11-05T12:16:27.057+01:00also quantum field theory in a nutshell is not for...also quantum field theory in a nutshell is not for beginners.George Christodoulideshttp://www.facebook.com/george.christodoulides.71noreply@blogger.comtag:blogger.com,1999:blog-8666091.post-67300294455793786842012-11-05T12:15:05.159+01:002012-11-05T12:15:05.159+01:00i know that Weinberg's books are not for begin...i know that Weinberg's books are not for beginners. QFT demystified is way easier but it is not that easy.George Christodoulideshttp://www.facebook.com/george.christodoulides.71noreply@blogger.comtag:blogger.com,1999:blog-8666091.post-31175988864522391912012-11-05T11:33:23.453+01:002012-11-05T11:33:23.453+01:00Dear Lumo,
this is a slightly more serious reques...Dear Lumo,<br /><br />this is a slightly more serious request than my usual joke comments ;-) and I'd be happy if you could give me a good advice on the following:<br /><br />I'm now looking for a QFT book from which I can really and a bit more sereiously learn how to do calculations things myself, for example in the context of applying QFT to turbulence theory. <br /><br />Unfortunately I'm not among the stellar bright wizzards who can discover or invent many tricks themself; I rather need to first "passively" follow detailed examples to see how it works before I try to do it myselfs. That is why I appreciate the Demystified books so much. The QFT Nutshell I like too, but as Tony Zee says himself, this book is rather intended to grasp the physical concepts than to learn how to calculate things.<br /><br />Dear Lumo, could you give me a hint which of these QFT books could best fit my needs, I would really appreciate it :-) ?<br /><br />(If my question is too annoying or importunate, just ignore it ;-) ...)<br /><br />CheersDilatonnoreply@blogger.com