The Elegant Universe: Superstrings, Hidden Dimensions and the Quest for the Ultimate Theory (Hardcover)

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

Brian Greene's exhilarating book is yet another in the series of totally accessible volumes written by physicists for the non-specialist reader. The blend of acute scientific insight and well-written prose is highly seductive, as Greene deals with the layers of mystery surrounding 'string theory', in which the universe consists of 11 dimensions, and the fabric of space tears and repairs itself. All matter (from the smallest quarks to the most imposing supernovas) is generated by vibrations of microscopic loops of energy. The string theory has been hailed as a Theory of Everything, with its potential to unify all the forces of nature. Greene's use of simile is particularly apposite, with everything from an amusement park ride to ants on a garden hose used to explain the strange and beautiful realities revealed by modern physics. Many will find Greene's lengthy but readable book the most popular addition yet to the library of popular science. (Kirkus UK)

Superstring theory may provide the long-sought unification of physics for which Einstein sought in vain. Here is a look at the current state of the quest. Greene (a professor of physics and mathematics at Columbia and Cornell) begins by pointing out the central problem of modern physics. Quantum mechanics and general relativity both work perfectly, and they cannot both be right. Relativity works for large, massive objects; quantum theory for tiny ones. Normally, the two realms can be kept separate. Yet increasingly, physics deals with phenomena such as black holes, where the conflicts are impossible to avoid. Out of the search for a more complete explanation came string theory. Its foundations were laid down some 30 years ago by Gabriele Venizano, who found that a two-century-old formula by Leonard Euler described subatomic particles more elegantly than existing theory. The relationships would make sense if elementary particles were not pointlike, but elongated and vibrating, like tiny musical strings - in one sense, a modern version of the ancient metaphor of the music of the spheres. It took a while for physicists to embrace string theory; for one thing, it seemed to predict things nobody had ever seen. And despite its formidable explanatory power, its mathematical expressions were often even more formidable - Greene describes some of the equations as nearly impossible to understand, let alone solve. Still, it has the right look about it, and two waves of enthusiasm (one in the mid-1980s, the other ten years later) have convinced many physicists of the theory's probable validity. Greene deftly summarizes these findings, in areas from subatomic-particle theory to cosmology, with occasional forays into deeper waters such as the ten-dimensional structure of the universe, with several dimensions folded undetectably back into themselves. A final chapter forecasts that string theory will become the standard physical model in the next century. Entertaining and well-written - possibly the clearest popular treatment to date of this complex subject. (Kirkus Reviews)