Many Worlds

Author: Simon Saunders
Publisher: OUP Oxford
ISBN: 0191614114
Size: 30.16 MB
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What does realism about the quantum state imply? What follows when quantum theory is applied without restriction, if need be, to the whole universe? These are the questions which an illustrious team of philosophers and physicists debate in this volume. All the contributors are agreed on realism, and on the need, or the aspiration, for a theory that unites micro- and macroworlds, at least in principle. But the further claim argued by some is that if you allow the Schrödinger equation unrestricted application, supposing the quantum state to be something physically real, then this universe is one of countlessly many others, constantly branching in time, all of which are real. The result is the many worlds theory, also known as the Everett interpretation of quantum mechanics. The contrary claim sees this picture of many worlds as in no sense inherent in quantum mechanics, even when the latter is allowed unrestricted scope and even given that the quantum state itself is something physically real. For this picture of branching worlds fails to make physical sense, let alone common sense, even on its own terms. The status of these worlds, what they are made of, is never adequately explained. Ordinary ideas about time and identity over time become hopelessly compromised. The concept of probability itself is brought into question. This picture of many branching worlds is inchoate, it is a vision, an error. There are realist alternatives to many worlds, some even that preserve the Schrödinger equation unchanged. Twenty specially written essays, accompanied by commentaries and discussions, examine these claims and counterclaims in depth. They focus first on the question of ontology, the existence of worlds (Part 1 and 2), second on the interpretation of probability (Parts 3 and 4), and third on alternatives or additions to many worlds (Parts 5 and 6). The introduction offers a helpful guide to the arguments for the Everett interpretation, particularly as they have been formulated in the last two decades.

Schr Dinger S Rabbits

Author: Colin Bruce
Publisher: Joseph Henry Press
ISBN: 9780309166027
Size: 27.80 MB
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For the better part of a century, attempts to explain what was really going on in the quantum world seemed doomed to failure. But recent technological advances have made the question both practical and urgent. A brilliantly imaginative group of physicists at Oxford University have risen to the challenge. This is their story. At long last, there is a sensible way to think about quantum mechanics. The new view abolishes the need to believe in randomness, long-range spooky forces, or conscious observers with mysterious powers to collapse cats into a state of life or death. But the new understanding comes at a price: we must accept that we live in a multiverse wherein countless versions of reality unfold side-by-side. The philosophical and personal consequences of this are awe-inspiring. The new interpretation has allowed imaginative physicists to conceive of wonderful new technologies: measuring devices that effectively share information between worlds and computers that can borrow the power of other worlds to perform calculations. Step by step, the problems initially associated with the original many-worlds formulation have been addressed and answered so that a clear but startling new picture has emerged. Just as Copenhagen was the centre of quantum discussion a lifetime ago, so Oxford has been the epicenter of the modern debate, with such figures as Roger Penrose and Anton Zeilinger fighting for single-world views, and David Deutsch, Lev Vaidman and a host of others for many-worlds. An independent physicist living in Oxford, Bruce has had a ringside seat to the debate. In his capable hands, we understand why the initially fantastic sounding many-worlds view is not only a useful way to look at things, but logically compelling. Parallel worlds are as real as the distant galaxies detected by the Hubble Space Telescope, even though the evidence for their existence may consist only of a few photons.

The Many Worlds Of Hugh Everett Iii

Author: Peter Byrne
Publisher: OUP Oxford
ISBN: 0191655228
Size: 21.98 MB
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Peter Byrne tells the story of Hugh Everett III (1930-1982), whose "many worlds" theory of multiple universes has had a profound impact on physics and philosophy. Using Everett's unpublished papers (recently discovered in his son's basement) and dozens of interviews with his friends, colleagues, and surviving family members, Byrne paints, for the general reader, a detailed portrait of the genius who invented an astonishing way of describing our complex universe from the inside. Everett's mathematical model (called the "universal wave function") treats all possible events as "equally real", and concludes that countless copies of every person and thing exist in all possible configurations spread over an infinity of universes: many worlds. Afflicted by depression and addictions, Everett strove to bring rational order to the professional realms in which he played historically significant roles. In addition to his famous interpretation of quantum mechanics, Everett wrote a classic paper in game theory; created computer algorithms that revolutionized military operations research; and performed pioneering work in artificial intelligence for top secret government projects. He wrote the original software for targeting cities in a nuclear hot war; and he was one of the first scientists to recognize the danger of nuclear winter. As a Cold Warrior, he designed logical systems that modeled "rational" human and machine behaviors, and yet he was largely oblivious to the emotional damage his irrational personal behavior inflicted upon his family, lovers, and business partners. He died young, but left behind a fascinating record of his life, including correspondence with such philosophically inclined physicists as Niels Bohr, Norbert Wiener, and John Wheeler. These remarkable letters illuminate the long and often bitter struggle to explain the paradox of measurement at the heart of quantum physics. In recent years, Everett's solution to this mysterious problem - the existence of a universe of universes - has gained considerable traction in scientific circles, not as science fiction, but as an explanation of physical reality.

The Many Worlds Interpretation Of Quantum Mechanics

Author: Bryce Seligman Dewitt
Publisher: Princeton University Press
ISBN: 140086805X
Size: 50.14 MB
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A novel interpretation of quantum mechanics, first proposed in brief form by Hugh Everett in 1957, forms the nucleus around which this book has developed. In his interpretation, Dr. Everett denies the existence of a separate classical realm and asserts the propriety of considering a state vector for the whole universe. Because this state vector never collapses, reality as a whole is rigorously deterministic. This reality, which is described jointly by the dynamical variables and the state vector, is not the reality customarily perceived; rather, it is a reality composed of many worlds. By virtue of the temporal development of the dynamical variables, the state vector decomposes naturally into orthogonal vectors, reflecting a continual splitting of the universe into a multitude of mutually unobservable but equally real worlds, in each of which every good measurement has yielded a definite result, and in most of which the familiar statistical quantum laws hold. The volume contains Dr. Everett's short paper from 1957, "'Relative State' Formulation of Quantum Mechanics," and a far longer exposition of his interpretation, entitled "The Theory of the Universal Wave Function," never before published. In addition, other papers by Wheeler, DeWitt, Graham, and Cooper and Van Vechten provide further discussion of the same theme. Together, they constitute virtually the entire world output of scholarly commentary on the Everett interpretation. Originally published in 1973. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.

The Many Worlds Of Albie Bright

Author: Christopher Edge
Publisher: Delacorte Books for Young Readers
ISBN: 1524713589
Size: 80.12 MB
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Fun science meets humor and heart in this adventure about a boy who is searching for his mother . . . in a parallel universe. Stephen Albie Bright leads a happy, normal life. Well, as normal as it gets with two astrophysicist parents who named their son after their favorite scientists, Stephen Hawking and Albert Einstein. But then Albie’s mother dies of cancer, and his world is shattered. When his father explains that she might be alive in a parallel universe, Albie knows he has to find her. So, armed with a box, a laptop, and a banana, Albie sets out to do just that. Of course, when you’re universe-hopping for the very first time, it’s difficult to find the one you want. As Albie searches, he discovers some pretty big surprises about himself and our universe(s), and stumbles upon the answers to life’s most challenging questions. A poignant, funny, and heartwarming adventure, this extraordinary novel is for anyone who has ever been curious. Praise for The Many Worlds of Albie Bright: “A big book with a big brain, big laughs, and a big, big heart.” —FRANK COTTRELL BOYCE, New York Times bestselling author of Millions and Cosmic “Hilarious and full of heart.” —PIERS TORDAY, author of The Last Wild “I’d love this book in all the worlds. Heartbreaking, heartwarming, heartstopping. Amazing.” —HOLLY SMALE, author of the award-winning Geek Girl series “Heartwarming.” —The Guardian “Proves the theory that novels about science can be enormous fun.” —The Times Children’s Book of the Week (UK) “Moving, and exploding with scientific ideas and wonder.” —The Herald (UK)

A Community Of Many Worlds

Author: Kathleen Benson
Publisher: Syracuse University Press
ISBN: 9780815607397
Size: 47.21 MB
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New York City's main Arab communities exemplify the continuity and change that has taken place throughout the city's rich history. The Museum of the City of New York, in partnership with the Middle East Institute at Columbia University and a group of local Arab and non-Arab scholars, activists and educators, undertook a long overdue exploration of New York's Arab populations. The result is a revealing collection of writings and photographs that document and tell the stories of these communities.

Tandem

Author: Anna Jarzab
Publisher: Delacorte Press
ISBN: 0307977250
Size: 50.59 MB
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Read the book that Marie Lu, New York Times bestselling author of the LEGEND trilogy called, "A fascinating world of parallel universes, sexy doppelgangers, and breathtaking action. Such a fun and addictive read!" A captivating tale of rebellion and romance that spans parallel worlds. Everything repeats. You. Your best friend. Every person you know. Many worlds, many lives—infinite possibilities. Welcome to the multiverse. Sixteen-year-old Sasha Lawson has only ever known one small, ordinary life. When she was young, she loved her grandfather's stories of parallel worlds, inhabited by girls who looked like her but led totally different lives. Sasha never believed such worlds were real—until now, when she finds herself thrust into one against her will. To prevent imminent war, Sasha must slip into the life of an alternate version of herself, a princess who has vanished on the eve of her arranged marriage. If Sasha succeeds in fooling everyone, she will be returned home; if she fails, she'll be trapped in another girl's life forever. As time runs out, Sasha finds herself torn between two worlds, two lives, and two young men vying for her love—one who knows her secret, and one who believes she's someone she's not. "Clever and exhilarating—each page is a pleasure."—Ally Condie, the #1 New York Times bestselling author of Matched From the Hardcover edition.

Many Worlds In One

Author: Alex Vilenkin
Publisher: Hill and Wang
ISBN: 9780809067220
Size: 60.72 MB
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A Leading Figure in the Development of the New Cosmology Explains What It All Means Among his peers, Alex Vilenkin is regarded as one of the most imaginative and creative cosmologists of our time. His contributions to our current understanding of the universe include a number of novel ideas, two of which--eternal cosmic inflation and the quantum creation of the universe from nothing--have provided a scientific foundation for the possible existence of multiple universes. With this book--his first for the general reader--Vilenkin joins another select group: the handful of first-rank scientists who are equally adept at explaining their work to nonspecialists. With engaging, well-paced storytelling, a droll sense of humor, and a generous sprinkling of helpful cartoons, he conjures up a bizarre and fascinating new worldview that--to paraphrase Niels Bohr--just might be crazy enough to be true.

Prince Of Stories

Author: Hank Wagner
Publisher: St. Martin's Press
ISBN: 9781429961783
Size: 18.70 MB
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Over the past twenty years, Neil Gaiman has developed into the premier fantasist of his generation, achieving that rarest of combinations—unrivaled critical respect and extraordinary commercial success. From the landmark comic book series The Sandman to novels such as the New York Times bestselling American Gods and Anansi Boys, from children's literature like Coraline to screenplays for such films as Beowulf, Gaiman work has garnered him an enthusiastic and fiercely loyal, global following. To comic book fans, he is Zeus in the pantheon of creative gods, having changed that industry forever. For discerning readers, he bridges the vast gap that traditionally divides lovers of "literary" and "genre" fiction. Gaiman is truly a pop culture phenomenon, an artist with a magic touch whose work has won almost universal acclaim. Now, for the first time ever, Prince of Stories chronicles the history and impact of the complete works of Neil Gaiman in film, fiction, music, comic books, and beyond. Containing hours of exclusive interviews with Gaiman and conversations with his collaborators, as well as wonderful nuggets of his work such as the beginning of an unpublished novel, a rare comic and never-before-seen essay, this is a treasure trove of all things Gaiman. In addition to providing in depth information and commentary on Gaiman's myriad works, the book also includes rare photographs, book covers, artwork, and related trivia and minutiae, making it both an insightful introduction to his work, and a true "must-have" for his ever growing legion of fans.

Many Worlds

Author: Steven Dick
Publisher: Templeton Foundation Press
ISBN: 1890151424
Size: 58.15 MB
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This text examines the possibility of a cosmic evolution process that encompasses our own planet and universe as well as other planets and universes. Focus is on how this concept fits in with our ideas of God and spirituality.