R. Shankar is Josiah Willard Gibbs Professor of Physics, Yale University. He is winner of the American Physical Society's Lilienfeld Prize and author of five textbooks, including Principles of Quantum Mechanics, Basic Training in Mathematics, and Quantum Field Theory and Condensed Matter Physics.
"""Well-suited for use either as a primary textbook or a source of additional readings for a first-year physics course intended for students with strong backgrounds in mathematics and physics.""--Choice"