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
-Abdelkrim Boukahil, University of Wisconsin
"Townsend is the best book I know for advanced undergraduate quantum mechanics. It is clear, contemporary, and compact. My students used it as a wonderful springboard to graduate school."
-Ralph D. Amado, University of Pennsylvania
With this second
edition, Townsend has succeeded in making a clear and pedagogical textbook on
undergraduate quantum mechanics even better.
-Charles Gale, McGill University
2nd edition of Townsend's book has added some very nice new features. New sections on
contemporary topics and newly added worked examples have further increased my
satisfaction with the book."
-Randall Feenstra, Carnegie Mellon University
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 Schrödinger 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
An Instructor's Manual for
adopting professors will be available.
About the Author
John S. Townsend is the Susan and Bruce Worster Professor of Physics at Harvey Mudd College, the science and engineering college of the Claremont Colleges. He received his B.S. from Duke University, his Ph.D. from Johns Hopkins University, and was a National Science Foundation Graduate Fellow. He has been a visiting professor at Caltech, the University of Southampton in England, Duke University and Swarthmore College, and he was a Science Fellow at the Center for International Security and Arms Control at Stanford University. He loves teaching. Townsend is also the author of Quantum Physics: A Fundamental Approach to Modern Physics.