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Parallel Worlds: Fact or Fiction? (English Edition) von [Gao, Shan]
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Parallel Worlds: Fact or Fiction? (English Edition) Kindle Edition


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Produktbeschreibungen

Kurzbeschreibung

In 1957, a physics graduate student at Princeton University, Hugh Everett III, came up with a crazy idea that purported to solve a major puzzle in quantum theory, the so-called measurement problem. According to the idea, in addition to the world we are aware of directly, there are many other similar worlds which exist in parallel at the same space and time.

Nowadays, parallel worlds, also known as parallel universes or multiverse in brief, is becoming the most popular picture of the quantum universe. The picture is frequently featured in scientific magazines and widely popularized by best-selling authors like John Gribbin, Michio Kaku, and Brian Greene. But wait, do parallel worlds really exist?

In this book, the idea of parallel worlds is carefully reexamined. It is clearly demonstrated that the idea is inconsistent with the established parts of quantum theory. Although reading the book requires a basic knowledge of quantum physics, the main demonstration is accessible to general readers. This book may appeal to people who want to gain a real understanding of the mysterious quantum universe.

Produktinformation

  • Format: Kindle Edition
  • Dateigröße: 355 KB
  • Seitenzahl der Print-Ausgabe: 57 Seiten
  • Verlag: Amazon Kindle Direct Publishing; Auflage: 3 (8. Juli 2014)
  • Verkauf durch: Amazon Media EU S.à r.l.
  • Sprache: Englisch
  • ASIN: B007VLSFBM
  • Text-to-Speech (Vorlesemodus): Aktiviert
  • X-Ray:
  • Word Wise: Nicht aktiviert
  • Verbesserter Schriftsatz: Aktiviert
  • Durchschnittliche Kundenbewertung: Schreiben Sie die erste Bewertung
  • Amazon Bestseller-Rang: #420.994 Bezahlt in Kindle-Shop (Siehe Top 100 Bezahlt in Kindle-Shop)

  •  Ist der Verkauf dieses Produkts für Sie nicht akzeptabel?

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Amazon.com: 3.0 von 5 Sternen 5 Rezensionen
21 von 23 Kunden fanden die folgende Rezension hilfreich
3.0 von 5 Sternen Bold and cogently argued, but problematic. 3. Februar 2013
Von Pix - Veröffentlicht auf Amazon.com
Format: Kindle Edition
This book combines a thorough attempt to refute Hugh Everett's "Many Worlds Interpretation" (MWI) of quantum mechanics with a series of bold conjectures on the nature of the 'wave function'. Naturally, some familiarity with these subjects is suggested for prospective buyers.

The first two chapters consist of a straightforward and reasonably layman-friendly explanation of the "Measurement problem" and of MWI. In 'Problems of MWI', the author notes some of the current objections, including the 'Preferred Basis' problem, which is essentially the difficulty of how to think about probability when every possible outcome of a measurement 'really' happens. The status of the preferred basis problem as a 'refutation' of MWI is uncertain, however, since it has been noted that *subjective* uncertainty about which outcome will be experienced follows naturally from base MWI.

In Chapter 3, the author proposes a 'definite' refutation of MWI, based upon the idea of protective measurements, and then builds upon the idea in each successive chapter. The arguments become technical very quickly, but are not impossible for a layman to follow. Unfortunately the resulting structure, while certainly interesting and probably valid if the premises are true, rests on several problematic conjectures. The first and most crucial (in the sense that every chapter afterward hinges on the truth of this premise) is that protective measurements allow the entire wave function of a quantum system to be measured. The technical specifics of protective measurement are complicated (and completely theoretical; as far as I can tell no one has ever performed one), but the basic idea is that the average of a large number of 'adiabatic' measurements can amount to the same thing as an ensemble of measurements of identical systems. Since the measurements don't disturb the system *much*, it is imagined that the total deviation from the initial state is negligible. Obviously, this is where the argument starts to fray. Specifically, the state of the system must change in accordance with quantum theory every time a measurement in performed, and so each subsequent measurement gives information not about the original, undisturbed system, but about some function of it *plus* all of the states of all the prior measurements.

Chapters 4-6 assume the truth of the arguments in Chapter 3. Another refutation of MWI is advanced using the charge of electrons. The author asserts that if the charge is distributed as per MWI (ie. smeared out through space with each history), then all of those charges would electrostatically interact with each other, which is known not to be the case. From what I can tell (with my limited understanding), this is a frank misunderstanding of MWI, in which the *only* interaction between histories that ever takes place is quantum interference, not through any of the fundamental forces. From there, a possible picture of the wave function is advanced, where particles move discontinuously, randomly, and instantly between states. It must be noted that this 'jumping' is allowed to be faster than light; the author coyly notes that 'energy and momentum will require new definitions and understandings'. This new vision of microscopic motion is an interesting possibility, but since it is advanced as a consequence of the conclusions of chapter 3 it rests on somewhat shaky ground. Additionally, I'm not sure how to reconcile it with the existence of *non-random* quantum interference, where the probabilistic effects of many histories combine in such a way as to result in a single, well defined outcome every time, as in a Mach-Zehnder interferometer. Finally, the author discusses and convincingly dismisses current conjectures over whether gravity may provide a vehicle for dynamical wave function collapse.

Worth reading!
1 von 1 Kunden fanden die folgende Rezension hilfreich
5.0 von 5 Sternen Five Stars 2. Oktober 2014
Von Denise M. Law - Veröffentlicht auf Amazon.com
Format: Kindle Edition Verifizierter Kauf
Good read
0 von 1 Kunden fanden die folgende Rezension hilfreich
3.0 von 5 Sternen The book is completely biased toward disproving the theory. ... 28. September 2015
Von Allan M. Striker - Veröffentlicht auf Amazon.com
Format: Kindle Edition
The book is completely biased toward disproving the theory. It does not present both concepts. It only destroys the possibility of the theory's relavence.
0 von 1 Kunden fanden die folgende Rezension hilfreich
3.0 von 5 Sternen Three Stars 23. September 2014
Von Herbert J. Brun - Veröffentlicht auf Amazon.com
Format: Kindle Edition Verifizierter Kauf
It is a little over my head so I did not finish it yet
0 von 1 Kunden fanden die folgende Rezension hilfreich
1.0 von 5 Sternen One Star 29. April 2015
Von russell g bowe jr. - Veröffentlicht auf Amazon.com
Format: Kindle Edition Verifizierter Kauf
Was no pro only con
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