Once Before Time, Martin Bojowald
Once Before Time, Martin Bojowald
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Once Before Time
A Whole Story of the Universe

Author: Martin Bojowald

Narrator: Jonathan Cowley

Unabridged: 12 hr 23 min

Format: Digital Audiobook Download

Published: 11/09/2010


Synopsis

In 2000, Martin Bojowald, then a twenty-seven-year-old post-doc at Pennsylvania State University, used a relatively new theory called loop quantum gravity—a cunning combination of Einstein’s theory of gravity with quantum mechanics—to create a simple model of the universe. Loop quantum cosmology was born, and with it, a theory that managed to do something even Einstein’s general theory of relativity had failed to do—illuminate the very birth of the universe.

Ever since, loop quantum cosmology, or LQC, has been tantalizing physicists with the idea that our universe could conceivably have emerged from the collapse of a previous one. Now the theory is poised to formulate hypotheses we can actually test. If they are verified, the big bang will give way to the big bounce. Instead of a universe that emerged from a point of infinite density, we will have one that recycles, possibly through an eternal series of expansions and contractions, with no beginning and no end.

Bojowald’s major realization was that unlike general relativity, the physics of LQC do not break down at the big bang. The greatest mystery surrounding the origin of the universe is what cosmologists call the big bang “singularity”—the point at the beginning of the universe, prior to the existence of space and time, when gravity, along with the temperature and density of the universe, becomes infinite. The equations of general relativity can’t cope with such infinities, and as a result big bang theory has never been able to give any explanation for the initial condition of our universe, succeeding only in describing and explaining the evolution of the universe from that instant onward. Bojowald’s theory takes us right up to the first moment of the universe—and then back, even before the big bang itself.

About The Author

Martin Bojowald is an associate professor of physics at Pennsylvania State University’s Institute for Gravitation and the Cosmos. Originally from Germany, he now resides in Pennsylvania.


Reviews

Goodreads review by Mircea

In relativitatea generala, spatiu-timpul are o structura continua care ii permite sa colapseze in singulatitati (volum zero, densitate infinita, timp zero), cum sunt cele din gaurile negre si Big Bang. In gravitatia cuantica cu bucle, pe de alta parte, spatiu-timpul are o structura discreta. E forma......more

Goodreads review by G

Having finished the book I am surprised that it has a low rating. It is a good review of the state of current physics. To me it is one of the only books that gets to the bottom of the difference between String Theory and Loop Quantum Gravity without going into the mathematics. I don't think a book c......more

Goodreads review by Gary

Exciting telling of interesting solution for reconciling very big with the very small, but the science of loop quantum gravity still needs flushing out before it can claim the crown, and since I've read this book I've seen very little growth in this area, but I can say the same for Suzy.......more

Goodreads review by Andrei

Fizica cuantica pe intelesul tuturor. Nu ai nevoie de cunostinte avansate pentru a intelege conceptele prezentate.......more

Goodreads review by Bogdan

Well, it was about the time. Happy New Year :))......more


Quotes

“Readers will find undoubted insights into one possible explanation of the universe at its most fundamental and will experience the work of top-level science.”
The Wall Street Journal

Once Before Time tells the story of Bojowald’s discovery and its implications in fascinating, eloquent, even literary prose.”
New Scientist

“Bojowald argues precisely and meticulously.”
Providence Journal
 
“Bojowald manages to describe these complicated ideas without bogging down in mathematical notation. And like Stephen Hawking, he manages to help readers over the difficult spots with entertaining and literate prose.”
Pittsburgh Post-Gazette
 
“Bojowald’s explanations are thorough and logical, and his ideas and metaphors [have] panache.”
The Columbus Dispatch