## Three Roads To Quantum Gravity"It would be hard to imagine a better guide to this difficult subject."--Scientific AmericanIn Three Roads to Quantum Gravity, Lee Smolin provides an accessible overview of the attempts to build a final "theory of everything." He explains in simple terms what scientists are talking about when they say the world is made from exotic entities such as loops, strings, and black holes and tells the fascinating stories behind these discoveries: the rivalries, epiphanies, and intrigues he witnessed firsthand. "Provocative, original, and unsettling." --New York Review of Books "An excellent writer, a creative thinker."--Nature |

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#### LibraryThing Review

User Review - pbenson92025 - LibraryThingI liked parts of this book, as it introduced some new ideas that I had not been exposed to. On the other hand, I miust not have been paying attention because he lost me at several crucial points and ... Read full review

#### LibraryThing Review

User Review - sthitha_pragjna - LibraryThingLee Smolin is one of those physicists who can explain in lucid prose the motivation of his research. Having pioneered loop quantum gravity, he has written a book which is laid out logically and ... Read full review

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accelerating observer amount of information answer approach to quantum atomic structure background independent basic Bekenstein bound black hole called Carlo Rovelli causal structure CHAPTER classical consistent cosmological constant describe dimensions discrete Einstein Einstein’s theory electrons elementary particles energy entropy equations evolving existence experiments field lines Figure finite formulation fundamental geometry of space gravitons happens hidden region holographic principle horizon idea infinite number interact invented kind lattice laws of thermodynamics light cones look loop quantum gravity Louis Crane mass mathematical means measure motion Newton’s photons physicists picture Planck length Planck scale Planck units possible predictions problem processes quantum cosmology quantum geometry quantum theory quarks questions radiation relational relationships result Screen Smolin solutions spacetime speed of light spin network story string theory structure of space superconductor superposition tell temperature theorists theory and loop theory of gravity things uncertainty principle understand universe