Physicists and mathematicians throughout the world are working on one of the most ambitious theories ever proposed: superstring theory. String theory, as it is often called, is the key to the Unified Field Theory that eluded Einstein for more than 30 years. Finally, the century-old antagonism between the large and the small - General Relativity and Quantum Theory - is resolved. String theory proclaims that all of the wondrous happenings in the universe, from the frantic dancing of of subatomic quarks to the swirling of galaxies, are reflections of one grand physical principle and manifestations of one single entity: microscopically tiny vibrating loops of energy, a billionth of a billionth the size of an atom. In this work, Brian Greene relates the scientific story and the human struggle behind 20th-century physics' search for a theory of everything. Through the use of metaphor and analogy, this work makes some of the most sophisticated concepts accessible, aiming to bring the reader closer to an understanding of how the universe works.
To write a book to explain in simple, non-mathematical terms what superstring theory is in not a simple task. In
The Elegant Universe Brian Greene, a physicist who works in the area, does a very good job. Superstrings are a theory of particle physics that lays claim to being the ultimate "Theory of Everything", merging Einstein's relativity and quantum mechanics into an understanding of the physics of the very small and very large in the Universe. Hence to understand superstrings, relativity and quantum mechanics have to be explained as well. In this Brian Greene does a very good job, giving one of the best explainations of relativity I have read in the process. Superstring theory is still very much in its infancy and
The Elegant Universe does not claim that all the problems have been solved; in fact a point is made of pointing out all the present deficiencies of the theory.
Probably not a book for the very beginner, but anyone who has read popular accounts of particle physics and relativity should gain a lot from reading this book. In places not an easy read, not for the style (which was generally very easy) but simply for the difficulty of some of the concepts involved. Superstring theory may or may not be the theory of everything but this book will certainly tell you what we think we know so far. Definitely recommended, but don't expect to read it in a weekend. --Simon Goodwin