Overview

Terms such as expanding Universe , big bang , and initial singularity , are nowadays part of our common language. The idea that the Universe we observe today originated from an enormous explosion (big bang) is now well known and widely accepted, at all levels, in modern popular culture. But what happens to the Universe before the big bang? And would it make any sense at all to ask such a question? In fact, recent progress in theoretical physics, and in particular in String Theory, suggests answers to the above questions, providing us with mathematical tools able in principle to reconstruct the history of the Universe even for times before the big bang. In the emerging cosmological scenario the Universe, at the epoch of the big bang, instead of being a new born baby was actually a rather aged creature in the middle of its possibly infinitely enduring evolution. The aim of this book is to convey this picture in non-technical language accessibile also to non-specialists. The author, himself a leading cosmologist, draws attention to ongoing and future observations that might reveal relics of an era before the big bang.

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9783540868538

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<p>From the reviews: <p>What happens to the big bang singularity within string theory? Did time have a beginning? These and other pre-eminent questions, whose implications go far beyond the boundaries of physics and even of science, lie at the forefront of today's research in theoretical particle physics and cosmology. Maurizio Gasperini succeeds in this book in drawing a thorough - yet very accessible and captivating - panorama of the various answers that have so far emerged to those basic questions, and of the cosmological observations which may soon allow a stringent test of our most advanced theoretical ideas.<p>Gabriele Veneziano, Co-founder of String Theory<p> Gasperini describes how string theory can be used to describe a pre-big-bang era that gives birth to a big bang, resolving dilemmas of standard cosmology and predicting a testable remnant of gravitational radiation that should pervade the universe now. Summing Up: Recommended. Upper-division undergraduates. (M. Dickinson,

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