## Principles of Quantum MechanicsReviews from the First Edition: "An excellent text ... The postulates of quantum mechanics and the mathematical underpinnings are discussed in a clear, succinct manner." (American Scientist) "No matter how gently one introduces students to the concept of Dirac’s bras and kets, many are turned off. Shankar attacks the problem head-on in the first chapter, and in a very informal style suggests that there is nothing to be frightened of." (Physics Bulletin) Reviews of the Second Edition: "This massive text of 700 and odd pages has indeed an excellent get-up, is very verbal and expressive, and has extensively worked out calculational details---all just right for a first course. The style is conversational, more like a corridor talk or lecture notes, though arranged as a text. ... It would be particularly useful to beginning students and those in allied areas like quantum chemistry." (Mathematical Reviews)
R. Shankar has introduced major additions and updated key presentations in this second edition of Principles of Quantum Mechanics. New features of this innovative text include an entirely rewritten mathematical introduction, a discussion of Time-reversal invariance, and extensive coverage of a variety of path integrals and their applications. Additional highlights include: - Clear, accessible treatment of underlying mathematics - A review of Newtonian, Lagrangian, and Hamiltonian mechanics - Student understanding of quantum theory is enhanced by separate treatment of mathematical theorems and physical postulates - Unsurpassed coverage of path integrals and their relevance in contemporary physics The requisite text for advanced undergraduate- and graduate-level students, Principles of Quantum Mechanics, Second Edition is fully referenced and is supported by many exercises and solutions. The book’s self-contained chapters also make it suitable for independent study as well as for courses in applied disciplines. |

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### Conteúdo

1 | |

2 Review of Classical Mechanics | 75 |

3 All Is Not Well with Classical Mechanics | 107 |

4 The Postulatesa General Discussion | 115 |

5 Simple Problems in One Dimension | 151 |

6 The Classical Limit | 179 |

7 The Harmonic Oscillator | 185 |

8 The Path Integral Formulation of Quantum Theory | 222 |

14 Spin | 373 |

15 Addition of Angular Momenta | 403 |

16 The Variational and WKB Methods | 429 |

17 TimeIndependent Perturbation Theory | 451 |

18 TimeDependent Perturbation Theory | 473 |

19 Scattering Theory | 523 |

20 The Dirac Equation | 563 |

Part II | 581 |

9 The Heisenberg Uncertainty Relations | 237 |

10 Systems with N Degrees of Freedom | 247 |

11 Symmetries and Their Consequences | 279 |

12 Rotational Invariance and Angular Momentum | 305 |

13 The Hydrogen Atom | 353 |

Appendix | 655 |

Answers to Selected Exercises | 665 |

Table of Constants | 669 |

671 | |