Part I Modification of GR: General Scalar-Tensor Theories.- Gravity and Scalar Fields.- Cosmological Perturbations in the Most General Scalar-Tensor Theories l- Introduction to the Horndeski and the Galileon Theories.- Horndeski Theory and Cosmological Constant.- Part II Massive Gravity.- Introduction to Massive Gravity.- New Massive Gravity.- Topologically Massive Gravity.- Introduction to the Vainshtein Mechanism.- Black Hole Solutions in Massive Gravity.- Cosmological Applications of Massive Gravity.- Part III Other Modifications.- High Curvature Gravity Theories.- Higher Spin Theories.- Higher Spin Black Holes.- Introduction to Chern-Simons Theories.- Holographic Chern-Simons Theories.- Beyond Supergravity in AdS/CFT.- Holographic Perfect Fluidity, TMG and Gravitational Duality.- Patr IV Overview.- Modified Gravity: an Overview.

In the last few years modified gravity theories have been proposed as extensions of Einstein's theory of gravity. Their main motivation is to explain the latest cosmological and astrophysical data on dark energy and dark matter. The study of general relativity at small scales has already produced important results (cf e.g. LNP 863 Quantum Gravity and Quantum Cosmology) while its study at large scales is challenging because recent and upcoming observational results will provide important information on the validity of these modified theories.  

In this volume, various aspects of modified gravity at large scales will be discussed: high-curvature gravity theories; general scalar-tensor theories; Galileon theories and their cosmological applications; F(R) gravity theories; massive, new massive and topologically massive gravity; Chern-Simons modifications of general relativity (including holographic variants) and higher-spin gravity theories, to name but a few of the most important recent developments.  

Edited and authored by leading researchers in the field and cast into the form of a multi-author textbook at postgraduate level, this volume will be of benefit to all postgraduate students and newcomers from neighboring disciplines wishing to find a comprehensive guide for their future research.