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eBook A Modern Approach to Quantum Mechanics download

by John S. Townsend

eBook A Modern Approach to Quantum Mechanics download ISBN: 1891389785
Author: John S. Townsend
Publisher: University Science Books; 2 edition (February 24, 2012)
Language: English
Pages: 571
ePub: 1158 kb
Fb2: 1658 kb
Rating: 4.5
Other formats: azw lrf txt docx
Category: Math Sciences
Subcategory: Physics

I would say the book focuses on a matrix operator approach to QM, and in Ch 6 then transitions into position-space wave functions.

The problems at the end of each chapter also clarifies the concepts perfectly. I would say the book focuses on a matrix operator approach to QM, and in Ch 6 then transitions into position-space wave functions.

Inspired by Richard Feynman and .

This is a list of notable textbooks on classical mechanics and quantum mechanics arranged according to level .

2 Advanced undergraduate and graduate.

I learned quantum mechanics from John Townsend at Harvey Mudd College. He is an excellent instructor in a complex and challenging topic, and I love that the book reminds me so much of my days as his student. I have adopted it as the text in my own year-long quantum mechanics course and find that students like it and benefit from its strong pedagogical and friendly writing style.

A modern physics quantum mechanics textbook for upper-level . John S. Townsend Harvey Mudd College. Townsend is the best book I know for advanced undergraduate quantum mechanics.

A modern physics quantum mechanics textbook for upper-level undergraduates. Townsend’s textbook is far superior to its competitors in both content and notation. I am impressed by the way Townsend introduces the subject matter. It is a piece of art! Teaching is some sort of art, either you have or you don't, and Townsend has it!" -Abdelkrim Boukahil, University of Wisconsin. It is clear, contemporary, and compact. My students used it as a wonderful springboard to graduate school. Ralph D. Amado, University of Pennsylvania.

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Townsend, John S. Publication date. Sausalito, CA : University Science Books. inlibrary; printdisabled; trent university;. Books for People with Print Disabilities. Trent University Library Donation. Internet Archive Books. Uploaded by station18. cebu on June 19, 2019. SIMILAR ITEMS (based on metadata).

Using an innovative approach that students find both accessible and exciting, A Modern Approach to Quantum Mechanics, Second Edition lays out the foundations of quantum mechanics through the physics of intrinsic spin. Written to serve as the primary textbook for an upper-division course in quantum mechanics, Townsend's text gives professors and students a refreshing alternative to the old style of teaching, by allowing the basic physics of spin systems to drive the introduction of concepts such as Dirac notation, operators, eigenstates and eigenvalues, time evolution in quantum mechanics, and entanglement. Chapters 6 through 10 cover the more traditional subjects in wave mechanics-the Schrodinger equation in position space, the harmonic oscillator, orbital angular momentum, and central potentials-but they are motivated by the foundations developed in the earlier chapters. Students using this text will perceive wave mechanics as an important aspect of quantum mechanics, but not necessarily the core of the subject. Subsequent chapters are devoted to perturbation theory, identical particles, scattering, and the interaction of atoms with radiation, and an optional chapter on path integrals is also included. This new edition has been revised throughout to include many more worked examples and end-of-chapter problems, further enabling students to gain a complete mastery of quantum mechanics. It also includes new sections on quantum teleportation, the density operator, coherent states, and cavity quantum electrodynamics.
Comments: (7)
This is a good QM textbook if you know linear algebra. Townsend introduces all the important ideas of QM in the finite-dimensional case (mostly the two-state case) where it all makes sense in terms of matrices and vectors. Then, once we already know about generators, raising and lowering operators, time evolution, the uncertainty principle, etc., he introduces wave mechanics as the "limit" in which sums become integrals, and so on. The basic advantage of this approach is that commutators, generators, etc. sound reasonable in the two-state context; if the results are strange, at least the operations are familiar.

In later chapters there's still an above-average amount of operator talk, which is good because operators are more fun than differential equations. The treatment of the harmonic oscillator (ch. 7) is particularly elegant because of all the machinery that's already been built up (esp. raising and lowering operators). Later chapters are generally good, too, but the operator formalism helps less.

The chapter on Bell's inequalities (ch. 5) is concise and very clear.

The pace of the exposition is gentle but I didn't find it _too_ gentle. The lack of mathematical rigor in ch. 6 (wave mechanics) is fair enough given the audience, and I guess it's too much to expect ch. 2 to talk about Lie groups (though Noether's theorem could have been discussed). There are confusing patches, e.g. on the Born approximation in ch. 13 (Scattering) and some of the material on angular momenta in ch. 3, but nothing terminal that I noticed. (The intro to Green's functions in ch. 13 is cursory and not very clear, but they can be looked up, I guess.)

The problems are a bit of a let-down; the challenging ones are relatively sparse and a lot of the others are either one-liners or just annoying.
This textbook is excellent! It should be used at absolutely every university for entry to intermediate level courses on quantum mechanics. It is well written, has an excellent examples and problem sets. Everyone is talking how quantum mechanics are 'weird', 'strange' and 'impossible to comprehend', but it is obviously a lie. With proper (modern) approach everyone can understand and apply QM principles with ease. This textbook is amazing in providing support for modern QM course.
As a graduate student preparing for a PhD entrance exam, this is the most helpful quantum mechanics book I have found. Spending 1 week reading this covered more bra-ket notation and perturbation theory than 3 semesters of undergraduate quantum at 2 different schools. Great for self teaching and wish my course had used this book instead of Griffith.
The Sphinx of Driz
This is, hands down, the best quantum book for a Junior-level or higher student. I used this book in college and, six years later, still regularly use it as a reference. It is compact, incisive, and covers almost everything you could want. Being an experimental physicist, the one thing that I would've liked an additional chapter on is the density matrix formalism, which I feel isn't covered well anywhere and is quite important in practice. But for an introduction to everything from Dirac notation to quantum optics, Townsend is the best book there is.
Reads like an "undergraduate sakurai". A great book to learn undergraduate quantum mechanics.
read both Townsend's fundamental approach and modern approach and this makes quantum so accessible. The problems at the end of each chapter also clarifies the concepts perfectly.
After reading and completing all the problems in the 4 chapters of this book, the concept of spin really clicked for me. That's really important for understanding relativistic QM, and the problems were challenging and rewarding. I would say the book focuses on a matrix operator approach to QM, and in Ch 6 then transitions into position-space wave functions. Great book overall.
My book was missing pages 200-220, was gonna return it for another one but got burned in a house fire before I could. 4/5.