内容简介

This is the first introductory textbook on quantum field theory in gravitational backgrounds intended for undergraduate and beginning graduate students in the fields of theoretical astrophysics, cosmology, particle physics, and string theory. The book covers the basic (but essential) material of quantization of fields in an expanding universe and quantum fluctuations in inflationary spacetime. It also contains a detailed explanation of the Casimir, Unruh, and Hawking effects, and introduces the method of effective action used for calculating the back-reaction of quantum systems on a classical external gravitational field. The broad scope of the material covered will provide the reader with a thorough perspective of the subject. Every major result is derived from first principles and thoroughly explained. The book is self-contained and assumes only a basic knowledge of general relativity. Exercises with detailed solutions are provided throughout the book.

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看了前五章，用来复习场论和量子场论。对所谓二次量子化和场量子化区分点赞，场量子化推导点赞，基本上把量子场论讲的非常清楚。可惜这些不是本书重点。

引力作为背景的弯曲时空量子场论, Hawking辐射,Unruh辐射,inflation涨落分析这些处于量子场论和量子引力交界处的著名内容，算是讲得蛮简洁明了

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