Dark Energy

Luca Amendola is Professor of Physics at the University of Heidelberg, Germany. He is also an astronomer at the Italian National Institute for Astrophysics, Rome, and has authored more than 100 papers in international journals and conference proceedings. Shinji Tsujikawa is Associate Professor at Tokyo University of Science in Japan, where he teaches cosmology and relativity. He has published more than 80 papers in international refereed journals and has over 60 collaborators worldwide.

1. Overview; 2. Expansion history of the universe; 3. Correlation function and power spectrum; 4. Basics of cosmological perturbation theory; 5. Observational evidence of dark energy; 6. Cosmological constant; 7. Dark energy as a modified form of matter I: quintessence; 8. Dark energy as a modified form of matter II; 9. Dark energy as a modification of gravity; 10. Cosmic acceleration without dark energy; 11. Dark energy and linear cosmological perturbations; 12. Non-linear cosmological perturbations; 13. Statistical methods in cosmology; 14. Future observational constraints on the nature of dark energy; 15. Conclusion and outlook; 16. Answers to the problems; 17. Mathematical appendix; Index.