Learning quantum field theory doesn’t have to be hard

*What 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*, one of the most *student-friendly *textbooks ever written**,** now exists.

*PS: Right now you can get the ebook for $20 by using the discount code “corona” on the checkout page at Gumroad.*

Finally *understand* what quantum field theory is really all about.

READ BY STUDENTS AT

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 how 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 that we use to describe 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.

What’s inside?

- A complete bird’s-eye view of the most important ideas.
- Extensive discussion of the most useful tricks and methods used in quantum field theory.
- A thorough derivation of all fundamental aspects of the frameworks that we use to describe quantum field theory.
- Chapters on advanced ideas like effective field theories, the renormalization group, and non-perturbative effects.

- 10+ book recommendations that allow you easily to dive deeper, depending on your specialized interests
- Appendices that go through cumbersome calculations step by step.
- and more…

Who should read this book?

**Students of Physics**

- Finally, understand what your professor is talking about.
- Get a broad understanding that goes far beyond what 80% of all students will ever know.

**Interested "Outsiders"**

- Develop an understanding far beyond the standard popular science discussions.
- No-Nonsense Quantum Field Theory is ideal for busy people since it focuses solely on what's really important and cuts out all the fluff and overcomplication.

**Lecturers**

- Get inspiration for your lectures thanks to novel explanations not found anywhere else.
- Read extensive discussions about aspects of quantum field theory that are not included in the standard books.

How does this book help you?

Dozens of illustrations help you understand quantum field theory more effectively.

No-Nonsense Quantum Field Theory is one the most *student-friendly* textbooks ever written.

Here’s why.

First of all, the book is nothing like a formal university lecture. Instead, it’s like a casual conservation with a more experienced student. For example, this means that nothing is assumed to be “obvious” or “easy to see”.

Fully annotated equations allow you to follow the steps in any calculation immediately. No more re-reading or endless searching for equations.

Each chapter, each section, and each page focusses solely on the goal of helping you understand. Nothing is introduced without an explanation why you should care about it and it is always clear where each equation comes from.

The book contains no fluff since unnecessary content quickly leads to confusion. Instead, it ruthlessly focusses on the fundamentals and makes sure you understand them in detail.

Hundreds of sidenotes help you to recall the most important facts whenever they are needed.

- In total, the book contains more than 150 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 in.

Key ideas and equations are highlighted such that it’s always immediately clear what’s really important.

- Whenever a concept is mentioned again after its initial introduction, it is accompanied by a short side-note reminding you where you read it before and often repeating important details.

Multiple overview diagrams help you to understand the connections between the most important concepts and ideas.

- Summaries at the beginning of each chapter make sure you never get lost.

**About the author**

Hey! My name is Jakob and I’m a theoretical physicist based in Karlsruhe, Germany. My passion is finding the simplest possible explanations for seemingly complex topics and one of my favorite mantras is: “*any scientist who can’t explain to an eight-year-old what he is doing is a charlatan.*”

This is the common theme in all my projects.

**Praise for Jakob Schwichtenberg’s Books**

The problem is that we are not actually taught this stuff and so we just kind of perform the drunkard’s walk on the path to understanding the material. But your text has already been tremendously insightful and I am only on page 52!

### Nicholas Valverde

I am a student in the elite master course in theoretical and mathematical physics at LMU and I recently started to study your book. Needless to say, it is a masterpiece. I fully agree with everything you wrote in it. This is exactly the book a physics student needs.

### Federico Roccati

This is a quite wonderful text in the sense that it is very down to Earth and doesn't assume you are a genius who can fill in the details from the sky [...] I'm glad I spent the money on this book, it contains a lot of important physical insights as to why the mathematics work the way it does. Not every physics author does this, nor for mathematicians either.

### Marcus Quinn Rodriguez Tenes

Really helped me understand what was going on in my undergraduate degree.

### Naim Hussain

First let me tell you that I liked your book a lot . It is the best introduction to physics I have read in a long time .

### Rudy Blyweert

I really love this book, since I at last have found a lucid text that I can read on the train, sitting in a park etc.

### G. Ullman

Undergraduates, today and in the future, are so lucky to have this book. It’s the book I wish I had as an undergraduate, it would have saved a lot of time and misplaced effort. Future undergraduates will not have to experience the frustration of trawling through various dense texts, on topics within this new book, but were written for a much more advanced reader.

### toonsoldier

### Paul Wakefield

This is the book I’ve been looking for all these years – a clear, concise, well-written summary, from an introductory level, of advanced (for me, at least) physics topics [...]

### Dave Pendleton

This is a fantastic book that deserves the widest possible audience. [...] So I am finally gaining a deep understanding on the character of physical law; this approach has profound explanatory power. If you have ever wondered why nature is the way it is and not some other, this book can give you new tools to approaching an answer. Overall, a very fine, deep physics book.

### Jandro Kirkish

Well done! Easy to follow as a self-study text, and one that I would recommend to any undergraduate or older graduate.

### James Gort

We want to make sure that our books are as helpful as possible. We encourage our readers to discuss the content of the book with each other and give us feedback on everything they like or dislike.

For this reason, we release only 100 initial copies of each book. This makes sure that we can participate in the discussions and no feedback gets lost in our inbox.

After the first 100 copies are sold we update the book based on the feedback we received. (This process takes some time and there is no fixed date.) Afterward, we will release another limited number of copies at a higher price. If you missed the first 100 initial copies, make sure to sign up below to get notified when we release further copies.

If you buy the book now you will receive a free digital copy of all future editions.

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**FAQ**

**What if I want to buy the eBook and the paperback version? Do I get a discount?**

You just send an email to jakobschwich [at] gmail.com and I’ll tell you how.

**I’m a non-native speaker. Will it be hard for me to understand your book?**

No. The book is written in simple language, and each technical term is carefully explained.

**I have a question. How can I contact you?**

Please contact me via email: jakobschwich [at] gmail.com