Many Worlds in One: The Search for Other Universes. Alex Vilenkin, Author. Hill & Wang $24 (p) ISBN Many Worlds in One has ratings and 20 reviews. John said: I’m not sure who is the better scientist, but in terms of the prose required to address thi. RENOWNED cosmologist Alex Vilenkin, who is director of the Tufts University Institute of Cosmology in Massachusetts is known for his theory.

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Yours and others who gave good comments, are encouraging.

Many Worlds in One: The Search for Other Universes

But it is important to emphasize that this is not yet completely firmly established, and there are subtleties that one might worry about in trying to infer a nonperturbative effect on space-time from a quantum effect. I think I did a poor job explaining myself.

Among the topics we discuss are the implications of the K-theory constraints, statistical correlations among physical quantities and an investigation of the various statistical suppression factors arising once certain Standard Model features are required.

Vilenkin provides us not only with a fascinating account of vlenkin physics, but also with a fun and, in places, humorous picture of life as a scientist. Once we have this model, the principle of mediocrity can be used to determine the probablility for us to live in one vacuum or other. It was somewhat simplistic compared to Steinhardt’s book on Ekpyrosis and especially Penrose’s book on Conformal Cyclical Cosmology.

He has made seminal contributions to the theory of cosmological inflation, the idea that the universe may contain topological remnants from particle physics phase transitions, to quantum cosmology, and to many other central topics. Worldz that the view is immense would be like calling War and Peace a long story – and it’s a pity, a generation after Alan Guth’s monumental discoveries, that the more mind-boggling consequences of inflationary cosmology have not filtered down to more non-scientists.


We have performed a vast computer survey of solutions to the stringy consistency conditions and present their statistical implications with special emphasis on the frequency of Standard Model features. We will also need to estimate the probabilities for bubbles of one vacuum to form amidst another vacuum.

A breezy survey of the view you get from the top of a mountain called Cosmic Inflation Theory. He does not give you all the answers immediately, so vielnkin are interested in what is coming next.

Either, you work in the field, know all the math and physics behind it, then it’s useless to read this book.

July 5, at 8: In the book, Vilenkin does an outstanding job at describing what a true vacuum is, a false vacuum, Negative vacuum, The Scalar Field, density perturbations, Inflationary Proces Interesting Book, I am firm believe in the Inflation theory. The main objection against it was that it was concerned with the universe beyond our horizon, which is not accessible to observation.

The large numbers of these vacua make any attempts to identify ones that agree with the real world computationally completely intractable. Apr 04, Jan rated it really liked it Shelves: It posits solely from observation that we live between periods of accelerated expansion, just as Earth is the centre of the Universe. It was at the time when Einstein had just developed his cosmological solution to the GR field equations and had introduced his cosmological constant to keep his model universe static.

[gr-qc/] Many worlds in one

Many Worlds in One: And not all forms of inflation are compatible with eternal-ness. So it is conceivable that with better information aorlds the inflationary potential from CMB etc.

The response I got from other colleagues was also less than enthusiastic. Hsu, Alejandro Jenkins, Mark B.


This text was a valuable supplement to Greene because I don’t think any one suite of analogies can properly conceptualize this complicated stuff, and really, for laypeople, all we are really looking for is some way to understand analogically.

The best use for the anthropic principle is to keep us from assuming that an apparent symmetry is exact. Our universe is a very small island in a vast ocean of numerous universes separated by false vacuum; in essence these are a set of disconnected space-time domains, and vilenoin reach to another universe in the multiverse is constrained by special theory of relativity.

We were not the only ones to notice this…. However, perhaps it was because of the anthropic principle. People who talk about statistical calcuations of these vacua are just ignoring the fact that this idea has been tried, and now is dead. In this article, Lawrence Krauss is quoted as follows: I read only few pop science books but they all had reviews, radio shows, etc.

Tegmark claimed that this theory has no free paramters whatsoever. In the apex words of Alyosha Zamolodchikov when asked what he thinks of strings as the final theory of everything.

Cosmic Variance

Before I bought it I researched it on the Internet as well. All interesting questions, i since the bulk of the book features a more formal discussion of the Standard Model of particle physics, the last fleeting thoughts come out of nowhere, unsubstantiated and left hanging in the air unanswered. I am not a regular Times reader.