暗能量是当今天体物理学和宇宙物理学领域重要研究领域，本书是一部教科书，书中全面介绍了暗能量的概念与理论，以及暗能量的观测方法观测结果。本书各章有有习题，书后附有习题详解。本书可作为物理学专业研究生教材。目次：综述；宇宙膨胀史；相关函数和能谱；宇宙微扰理论基础；暗能量观察证据；宇宙学常数；改型物质的暗能量；改型重力暗能量；没有暗能量的宇宙加速；暗能量和线性宇宙微扰；非线性宇宙微扰；宇宙学中的统计方法；未来暗能量本质的观测约束。

   Preface

List of frequently used symbols

1 Overview

2 Expansion history of the Universe

2.1 Friedmann equations

2.2 Hubble's law

2.3 Matter species in the Universe

2.4 Cosmic distances

2.5 The equation of state of dark energy

2.6 Problems

3 Correlation function and power spectrum

3.1 The correlation function

3.2 The n-point correlation function

3.3 The power spectrum

3.4 From the power spectrum to the moments

3.5 Problems

4 Basics of cosmological perturbation theory

4.1 Perturbing General Relativity

4.2 The Newtonian gauge

4.3 Single-fluid model

4.4 Scales larger than the horizon

4.5 Scales smaller than the Hubble radius

4.6 Two-fluid solutions

4.7 Velocity field

4.8 The redshift distortion

4.9 Baryons, photons, and neutrinos

4.10 The matter power spectrum

4.11 Perturbed photon propagation

4.12 Problems

5 Observational evidence of dark energy

5.1 The age of the Universe

5.2 Supernova observations

5.3 Cosmic Microwave Background

5.4 Baryon acoustic oscillations

5.5 Large-scale structure

5.6 Problems

6 Cosmological constant

6.1 Einstein equations with the cosmological constant

6.2 History of the cosmological constant

6.3 The fine tuning problem

6.4 The coincidence problem

6.5 Supersymmetric models

6.6 Cosmological constant and the anthropic principle

6.7 The decoupling of the cosmological constant from gravity

6.8 Problems

7 Dark energy as a modified form of matter I: Quintessence

7.1 Quintessence

7.2 Dynamical system approach

7.3 Early dark energy

7.4 Quintessence potentials in particle physics

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   L.阿门多拉（Luca Amendaola）德国海德堡大学物理系教授。

辻川信二（Shinji Tsujikawa）是日本东京理科大学物理系教授。