No-Nonsense Quantum Field Theory: A Student-Friendly Introduction by Jakob Schwichtenberg (PDF)

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Learning quantum field theory doesn’t have to be hardWhat if there were a book that allowed you to see the whole picture and not just tiny parts of it?Thoughts like this are the reason that No-Nonsense Quantum Field Theory now exists.What will you learn from this book?Get to know all fundamental concepts — Grasp what a quantum field is, why we use propagators to describe its behavior, and how Feynman diagrams help us to make sense of field interactions.Learn to describe quantum field theory mathematically — Understand the meaning and origin of the most important equations: the Klein-Gordon equation, the Dirac equation, the Proca equation, the Maxwell equations, and the canonical commutation/anticommutation relations.Master important quantum field theory interactions — Read fully annotated, step-by-step calculations and understand the general algorithm we use to particle interactions.Get an understanding you can be proud of —Learn about advanced topics like renormalization and regularization, spontaneous symmetry breaking, the renormalization group equations, non-perturbative phenomena, and effective field models.No-Nonsense Quantum Field Theory is one the most student-friendly book on quantum field theory ever written.Here’s why.First of all, it’s nothing like a formal university lecture. Instead, it’s like a casual conservation with a more experienced student. This also means that nothing is assumed to be “obvious” or “easy to see”.Each chapter, each section, and each page focuses solely on the goal to help you understand. Nothing is introduced without a thorough motivation and it is always clear where each equation comes from.The book ruthlessly focuses on the fundamentals and makes sure you’ll understand them in detail.The primary focus on the readers’ needs is also visible in dozens of small features that you won’t find in any other textbookIn total, the book contains more than 100 illustrations that help you understand the most important concepts visually.In each chapter, you’ll find fully annotated equations and calculations are done carefully step-by-step. This makes it much easier to understand what’s going on.Whenever a concept is used that was already introduced previously there is a short sidenote that reminds you where it was first introduced and often recites the main points.In addition, there are summaries at the beginning of each chapter that make sure you won’t get lost.

User’s Reviews

Reviews from Amazon users which were colected at the time this book was published on the website:

⭐Of all the books on quantum field theory that I have seen this one is by far the easiest to read. As usual with Jakob’s books, it almost reads like a novel.It is worth mentioning that this book also contains a detailed introduction (270 pages) to classical field theory. That alone is well worth the price of the book!

⭐Of all the books that purport to let you in on the secrets and mysteries of quantum field theory, this is the one that actually does it. After months of working through mine and plastering it all over with notes on the margins (which btw are already filled with the author’s notes – one of the great didactic tools the author uses to bring you along in the thought process), you’ll feel like you’ve gotten a simultaneously serious and also intuitive understanding of this imposing subject. I can’t recommend this enough – you can follow it up with Zee, Srednicki, even Lancaster, but nothing beats the explanatory power and the way to make you feel smart because you finally got it like this book does.

⭐I have studied Quantum Field Theory in graduate school and afterward. I was able to do the most demanding (and even all of the) calculations in the textbooks I read, but every time I finished, I was at a loss for how the many topics fit together, or how I got from the beginning to the end. I rarely knew why I was doing what I was doing while I was doing it. Some of the results would suddenly reappear hundreds of pages later. It was jarring and it frequently forced me to reread material from previous chapters. It was hard to know what topics were of great importance and would be reused later on and what topics were just a relatively unimportant tangent.Then I found this book. It seems that this book was written specifically to address all of my previous concerns. Jakob Schwichtenberg has done a remarkable job of connecting the overarching ideas with many of the nitty-gritty details. Finally, someone wrote an overview of how most of the ideas from QFT fit together. You know where each chapter fits in to the whole book. While you read this book, you will know why you are doing what you are doing. The author lets you know what is really important. You will know why group theory is so important in QFT and how it fits in with the rest of the topics in the book.This book is a bridge between the gee-whiz popular science accounts that lack equations and the relatively difficult textbooks that are full of equations and have far too few words. While there are relatively few requirements to reading this book (calculus and complex numbers are a must.), you are taken through legitimate Physics calculations by the end. This is not a comprehensive introduction to all of the topics in QFT. While the idea of spontaneously broken symmetries was covered, Electro-Weak Theory as a whole and Quantum Chromodynamics were not covered. (It does seem like more of these topics are touched on by some of the other No-Nonsense books by this author). You will not learn how to compute QED cross-sections in this book. But this book is the best place you can start if you truly want to feel like you grasp the main ideas and how they are related in QFT.It was truly exciting to work through this book and find an overall understanding of QFT.

⭐This reviewer is not a physicist by training but has a keen interest in physics and is a retired EE with working background in semiconductor physics and EM . This book is not a typical standard text on QFT but an extremely readable introduction to the subject. It is not a “popular” text for the general reader .This text will take you to an advance undergrad level understanding of the subject in the most “friendly” manner possible. There is no way around understanding QFT without wading into serious heavy physics and mathematics. The author has done a remarkable effort on laying out the physics in every chapter very clearly and the detail derivation are NOT glossed over. A lot of confusion for novices like myself on QFT is around the detail calculations and derivation .The book does a remarkable effort to put as much detail as humanly possible into each derivation and the reader is not left to fill in lots of gaps and left wondering how the equations move from one state to another( quantum pun intended)!!. Each chapter starts with the motivation and the underlying physics before hitting the hard part. The chapters ends with a recap and summary. Essential equations are repeated on the side bar so the reader does not have to constantly look for the neccessary background equations. The pedagogical approach is very refreshing and as good as it gets. The comparable book is “QFT – for gifted amateur” – by Lancaster/Blundell. Lancaster and Bundell covers several more advanced topics but this book goes into the fundamentals in much more detail. Both are great wonderful introductry books on QFT . I must admit that this is the first QFT text I managed to read cover to cover without getting unduly stuck ! maybe it just me being not smart enough to go thru books from Zee or Peskin etc , but I must give this author great credit for writing in such a way as to anticipate where the rough terrain are for beginners like me and smoothing it over as best as any book can. One point I do need to bring up is that this book is unlike most text is that there are no problems at the end of each chapter so there is no way to check your understanding by working thru some of these problems. All and all if you need to begin to explore QFT , this book is the best starting point I have come across in my humble opinion.

⭐Libro ideale per chiunque, studente o curioso appassionato, voglia affrontare l’argomento più difficile della fisica di oggi. Naturalmente richiede una buona preparazione matematica, più o meno a livello di primo biennio universitario, perchè non è e non vuole essere un libro divulgativo.Sono felice per l’acquisto e penso che acquisterò anche altri libri dell’autore.There are dozens and dozens of books about quantum field theory, I know because in my quest to finally pass my exams i wandered through a lot of them.In finding this book I have found a pedagogical clarity absolutely unmatched by any other book. It may not be as detailed and thorough as Weinberg, it may not be universally used like Peskin but i’ll tell you this: QFT is a really difficult subject, and never have i ever found a book that was able to make it so easy to learn and understand.The Math is explained in every thorough detail, the language and pedagogical approach is never confusing or obscure; it’s one of the few Physics books where, when you sit down and read 10 pages, then you get to stand up afterward having understood 10 pages of physics, not a word less.It may not be a complete book for most QFT university level courses, but reading this book will undoubtedly enable you to use it as a big and sturdy stepping stone to understand the material of any other course that may be a bit more complex or deep into the subject.I give it 5 stars with no hesitation, I would look for a sixth star if the book came with some exercises, but i understand that, given the detail in which the author explains all of the mathematical steps, typing the solution would have been a monumental job.Really good job Jakob amazing book.

⭐Como todos los libros dela serie “No non-sense” de este autor, es un acierto pleno. Se siguen las exposiciones como si estuviese delante un profesor y de los buenos. Además, todos sus títulos incluyen como apéndice las herramientas matemáticas necesarias para abordar la materia tratada, lo que facilita mucho el trabajo y casi evita tener que acudir a otros textos especializados. Un acierto total del autor.También, los ejemplos y los temas elegidos para desarrollar, otro acierto. Muy claro y muy bien hecho todo, incluidos los dibujos que el mismo autor realiza de su propia mano. Los esquemas que resumen y enlazan los conceptos permiten recordar y situar cada materia en relación con el contexto. Su enfoque metodológico es un acierto que le permite unir deferentes ramas de la física al abordar una de ellas, sus conexiones y además, lo expone todo con el suficiente detalle y claridad pasmosa. Se aprende de verdad física avanzada en todos los títulos de esta serie… ¡que recomiendo utilizar!Séduit par les ouvrages precedents de cet auteur, en particulier sur la Quantique, j’ai été déçu par celui-ci.Certes on s’attend à beaucoup d’équations mais la dose est ici assez énorme et SURTOUT on ne voit pas très bien ce que cela apporte, où l’auteur veut-il aller?Il ne motive vraiment pas assez le lecteur.Je compare ce livre à “Quantum field theory for the gifted amateur” .Pas vraiment évident à lire non plus bien entendu, mais au moins les auteurs éclairent le chemin de leur mieux.I’m a mathematician who has tried to get into this topic through several books and until I found this one I could not fully get the basics.

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