## A First Course in String TheoryString theory made understandable. Barton Zwiebach is once again faithful to his goal of making string theory accessible to undergraduates. He presents the main concepts of string theory in a concrete and physical way to develop intuition before formalism, often through simplified and illustrative examples. Complete and thorough in its coverage, this new edition now includes AdS/CFT correspondence and introduces superstrings. It is perfectly suited to introductory courses in string theory for students with a background in mathematics and physics. New sections cover strings on orbifolds, cosmic strings, moduli stabilization, and the string theory landscape. Now with almost 300 problems and exercises, with password-protected solutions for instructors at www.cambridge.org/zwiebach. |

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### Contents

Special relativity and extra dimensions | 13 |

Electromagnetism and gravitation in various dimensions | 45 |

Nonrelativistic strings | 73 |

The relativistic point particle | 89 |

String parameterization and classical motion | 130 |

Worldsheet currents | 154 |

Lightcone relativistic strings | 175 |

Lightcone fields and particles | 194 |

Tduality of closed strings | 376 |

Tduality of open strings | 400 |

Electromagnetic fields on Dbranes | 415 |

Nonlinear and Bornlnfeld electrodynamics | 433 |

String theory and particle physics | 451 |

String thermodynamics and black holes | 495 |

Strong interactions and AdSFT | 525 |

Covariant string quantization | 568 |

The relativistic quantum point particle | 216 |

Relativistic quantum open strings | 236 |

Relativistic quantum closed strings | 280 |

A look at relativistic superstrings | 307 |

Developments | 329 |

String charge and electric charge | 356 |

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### Common terms and phrases

action appears arise becomes black hole boundary conditions brane calculation called carry charge circle classical closed string commutation complete components Consider constant constraint coordinates corresponding coupling D-branes deﬁned denote density dependence derivatives describe determine diagram dimensions direction discuss electric endpoints energy equal equation equations of motion example fact factor fermions ﬁeld Figure ﬁnd ﬁrst ﬁxed follows four function gauge given gives gravitational implies indices integral interactions intersection invariant length light-cone Lorentz mass Maxwell metric mode Model momentum Note obtained open string operators oscillators parameter particle physical plane positive possible potential Problem quantization quantum quantum mechanics radius relations relativistic represents requires result scalar Show shown side solution space spacetime spatial string theory surface takes transformations turns units vanish vector world-sheet write zero