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Rating: 
Summary: Excellent, but maybe not enough
Review: It is really a very good book, and even if I agree with the definition of "pedagogical jewel" given to the quantum pinball example, I would not define this textbook an introductory one, even if a non-specialist can read it without many difficulties. I read it several years after my studies, and it represented to me a good and amusing opportunity to refresh or to learn subjects I didn't remember any more or I didn't meet in university course. And taking into account its low price, it is really worth purchasing this book.
Rating: 
Summary: Well, not all that introductory ...
Review: It is really a very good book, and even if I agree with the definition of "pedagogical jewel" given to the quantum pinball example, I would not define this textbook an introductory one, even if a non-specialist can read it without many difficulties. I read it several years after my studies, and it represented to me a good and amusing opportunity to refresh or to learn subjects I didn't remember any more or I didn't meet in university course. And taking into account its low price, it is really worth purchasing this book.
Rating:
Summary: Who says QFT is not fun to teach?
Review: This book is a counterexample to the idea that one cannot write a book on quantum field theory and keep a sense of humour. Quantum field theory of course is notoriously difficult, both in terms of its conceptual foundations and in calculating meaningful answers from its formalism. Perturbation theory has been the most succesful of the methods of calculation in quantum field theory, and the visualization of the terms of the perturbation series is greatly assisted by the use of Feynman diagrams. The author has done a great job in the elucidation of these diagrams, and readers will not only have fun reading this book but will also take away needed expertise in moving on to more advanced presentations of quantum field theory. Some readers may object to the pictorial, playful way in which the author explains some of the concepts, but he does not depart from the essential physics. Mathematicians who want to understand quantum field theory can also gain much from the reading of this book. Although not rigorous from a mathematical standpoint, the presentation will given them sorely needed intuition. Quantum field theory has resulted in an explosion of very interesting results in mathematics, particularly in the field of differential topology, and mathematicians need this kind of a presentation to assist them in the understanding of quantum field theory and how to apply it to mathematics (and the other way around). In addition, readers intending to enter the field of condensed matter physics will appreciate the clarity of the author's treatment, drawing as it does on many examples from that field. This includes a brief introduction to finite temperature quantum field theory. The use of mnemonics, pictures, and hand-waving arguments may be frowned upon by some, but as long as their use is supported by solid science, their didactic power is formidable. Arguments by analogy, and by appeals to common-sense objects are of great utility in explaining the intricacies of a subject as abtruse as quantum field theory. The author for example uses a pin-ball game, with its many scatterings, as a tool for introducing the quantum propagator, even though paths of a (classical) pin-ball are not really meaningful in the quantum realm. Once done though, he proceeds to derive the perturbation series, and as an example computes the energy and lifetime of an electron in an impure metal. The concept of a quasi-particle is exploited fully in this book to illustrate just how one can do calculations in quantum many-body theory. The reader will find ample discussion of Dyson's equation, the random phase approximation, phase transitions in Fermi systems, the Kondo problem, and the renormalization group in this book. Happy reading.....(and teaching).....
Rating:
Summary: Excellent, but maybe not enough
Review: This is indeed an excellent book. Witty and insightful, but sometimes the ease, with which you're lead through it, is in the way of stressing the really important stuff. If you are learning diagrams for the first time, and intend to do some serious research using the technique, I believe this book is just not enough: it will leave you unprepared to do much beyond the problems in the book. You might want to consult a more rigorous book, like that of Abrikosov et al., but the style may be a bit of a shock to those not used to the Russian "condensed writing". As an introduction that is less painful, and more of a textbook, I suggest Fetter and Walecka's book, though it's out of print.
Rating:
Summary: A perfect introduction to statistical physics
Review: This is the best book I found about Statistical Physics at an introductory level. It is a kind of book you can read almost as a novel, with a lot of examples and very clear. It is definitely the most pedagogical book about Statistical Physics ever.
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