"This book is certainly a positive contribution to the field ... it serves very well as a friendly introduction for those new to the field and as a useful and informative overview of the current state of affairs in this ever-burgeoning subject. In particular, some readers may find this book a useful primer for tackling the more detailed exposition of the top-down approach."

"It is very useful to have a systematic overview of the physics of perovskites. Surely the way it is represented is helpful for researchers in this field."

"I can gladly recommend this book to anyone wanting to refresh their physics basics or who would like to learn about the implications that physics has for other disciplines, and vice versa."

"This is an interesting book, primarily intended for advanced master's and PhD students in theoretical physics, but which may also be appreciated by more experienced researchers in the field ... The proofs of most statements are spelled out in great detail and the theoretical development is moreover supplemented with many illustrative examples."

"This work is appropriate for anyone with a solid background in upper-division undergraduate mathematics and physics ... The problems, which are scattered throughout the chapters, were very well chosen."

"Each chapter is well referenced, which will prove valuable to serious researchers."

"Harrison's treatment in the present book is pithy and distinctive, distilling a lifetime of research and reflection in a pointed, engaging discussion in eight chapters and several appendixes. Extensive references and a useful index round out the book. The work is well suited for chemistry and physics students at several levels. Its creative treatment may even engage an interested general reader."

"Chandra was not only a giant of 20th century science, he was a mentor and inspiration to generations of young researchers. My own career in the world of post-Newtonian gravity sprang directly from Chandra's work. And my own outlook on living life as a scientist was influenced by my encounters with him, first as his postdoc and later as a colleague. This book is a fitting and beautiful tribute to his many contributions to physics and astronomy."