Complexity, Entropy And The Physics Of Information 1st Edition by Wojciech H. Zurek (PDF)

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This book has emerged from a meeting held during the week of May 29 to June 2, 1989, at St. John’s College in Santa Fe under the auspices of the Santa Fe Institute. The (approximately 40) official participants as well as equally numerous “groupies” were enticed to Santa Fe by the above “manifesto.” The book—like the “Complexity, Entropy and the Physics of Information” meeting explores not only the connections between quantum and classical physics, information and its transfer, computation, and their significance for the formulation of physical theories, but it also considers the origins and evolution of the information-processing entities, their complexity, and the manner in which they analyze their perceptions to form models of the Universe. As a result, the contributions can be divided into distinct sections only with some difficulty. Indeed, I regard this degree of overlapping as a measure of the success of the meeting. It signifies consensus about the important questions and on the anticipated answers: they presumably lie somewhere in the “border territory,” where information, physics, complexity, quantum, and computation all meet.

User’s Reviews

Reviews from Amazon users which were colected at the time this book was published on the website:

⭐To say that “I Loved It” is a little over the top. This is an excellent reference book for the state of physics and cosmology through about 1989. Some math skills can be useful in some areas; however, you’ll find the text in most instances will give you a good review of the material. John Archibald Wheeler, with whom you are familiar, sets the stage. You’ll see names you’ve known and names you don’t know. I find myself verbally referencing material from the book when talking with my friends… good for one upmanship. I need to add: If you are a teacher, you already know that you will need to check the current state of physics for much has changed since 1989. My son wanted a copy for Christmas; he got it.

⭐collection of conference papers

⭐In Memoriam:Murray Gell-MannSeptember 15, 1929- May 24, 2019There are 32 papers in this volume, loosely divided into six sections. The conference occurred May 29-June 2, 1989.(1) Beginning with James Hartle and Murray Gell-Mann: Quantum Mechanics in the Light of Cosmology (30 pages). Read: “We suggest that resolution of many of the problems of interpretation presented by quantum mechanics is to be accomplished not by further scrutiny of the subject as it applies to reproducible laboratory situations, but rather by an examination of alternative histories of the Universe.” (page 426). This paper is from section six, Quantum Theory and Measurement. May 2019, Hartle and Gell-Mann have updated their research: “Alternative Decohering Histories in Quantum Mechanics” (preprint database arXiv.org: 1905:05859).(2) Asher Peres concludes: “…if the integrity of the axiomatic structure of quantum theory is not respected, then every aspect of the theory has to be reconsidered ab initio.” (page 355). The paper is entitled: Thermodynamic Constraints on Quantum Axioms. Asher Peres wrote an outstanding textbook: Quantum Theory, Concepts and Methods (1995).(3) E.T Jaynes has written a paper: Probability in Quantum Theory. Had I to choose a favorite paper from this volume, this is it ! He writes: “Let me stress our motivation. If quantum theory were not successful pragmatically, we would have no interest in its interpretation.” (page 385). E.T. Jaynes stresses the role of Bayesian probability; that is, “logical inference” over “random variables.” (page 387). The paper takes another look at the topic of zero-point-energy.(4) William Wootters has written a nice paper, Local Accessibility of Quantum States. Read: “Any set of measurements which are just sufficient for determining the states of the subsystem are, when performed jointly, also just sufficient for determining the state of the combined system” (page 44).(5) V.F. Mukhanov has written a brief, pretty, paper on the entropy of Black Holes. Read: “If a Black Hole is quantized, then the number of different ways to form it, from the given matter, is finite.” (page 48). Connections with number theory, in that “there is a one to one correspondence between the ways to form a Black Hole and the subdivisions of integer n into ordered sums of integer numbers.” For an update on the conjecture of quantized Black Holes, Cardoso, et.al.: “Gravitational Wave Echoes From Black Hole Area Quantization.” (Preprint database arXiv.org: 1902:10164).(6) John A. Wheeler writes the opening contribution: “every physical quantity, every it, derives its ultimate significance from bits, binary yes-or-no indications, a conclusion which we epitomize in the phrase “it from bit.” (page 3). More from John Archibald Wheeler in the fine book, At Home In The Universe (1994, AIP Press).(7) Concluding: A fascinating collection. Many of these contributions have stood the test of time. As precursor read the classic Shannon and Weaver, The Mathematical Theory of Communication (1949). For an introductory textbook account, read the excellent Schumacher and Westmoreland: Quantum Processes, Systems and Information (2010).American Association of Physics Teachers published a Resource Letter: Information Theory in Physics (1997, Grandy, American Journal of Physics, pages 466-476, Volume 65, Number 6).

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