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The concept of symmetry has widespread manifestations and many diverse applications-from architecture to mathematics to science. Yet, as twentieth-century physics has revealed, symmetry has a special, central role in nature, one that is occasionally and enigmatically violated. Fearful Symmetry brings the incredible discoveries of the juxtaposition of symmetry and asymmetry in contemporary physics within everyone's grasp. A. Zee, a distinguished physicist and skillful expositor, tells the exciting story of how contemporary theoretical physicists are following Einstein in their search for the beauty and simplicity of Nature. Animated by a sense of reverence and whimsy, Fearful Symmetry describes the majestic sweep and accomplishments of twentieth-century physics-one of the greatest chapters in the intellectual history of humankind.
Physics --- Symmetry (Physics) --- Renormalization (Physics) --- Philosophy --- Invariance principles (Physics) --- Symmetry (Chemistry) --- Conservation laws (Physics) --- 2020 Nobel Prize in physics. --- 2020 Nobel laureates in physics. --- 2020 Nobel laureates. --- Albert Einstein. --- Andrea Ghez. --- Einstein. --- Reinhard Genzel. --- Royal Swedish Academy of Sciences. --- Stockholm. --- black holes. --- general relativity. --- general theory of relativity. --- relativity. --- Physics - Philosophy
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What can fashionable ideas, blind faith, or pure fantasy possibly have to do with the scientific quest to understand the universe? Surely, theoretical physicists are immune to mere trends, dogmatic beliefs, or flights of fancy? In fact, acclaimed physicist and bestselling author Roger Penrose argues that researchers working at the extreme frontiers of physics are just as susceptible to these forces as anyone else. In this provocative book, he argues that fashion, faith, and fantasy, while sometimes productive and even essential in physics, may be leading today's researchers astray in three of the field's most important areas-string theory, quantum mechanics, and cosmology.Arguing that string theory has veered away from physical reality by positing six extra hidden dimensions, Penrose cautions that the fashionable nature of a theory can cloud our judgment of its plausibility. In the case of quantum mechanics, its stunning success in explaining the atomic universe has led to an uncritical faith that it must also apply to reasonably massive objects, and Penrose responds by suggesting possible changes in quantum theory. Turning to cosmology, he argues that most of the current fantastical ideas about the origins of the universe cannot be true, but that an even wilder reality may lie behind them. Finally, Penrose describes how fashion, faith, and fantasy have ironically also shaped his own work, from twistor theory, a possible alternative to string theory that is beginning to acquire a fashionable status, to "conformal cyclic cosmology," an idea so fantastic that it could be called "conformal crazy cosmology."The result is an important critique of some of the most significant developments in physics today from one of its most eminent figures.
Quantum theory. --- Physics. --- String models. --- Models, String --- String theory --- Nuclear reactions --- Natural philosophy --- Philosophy, Natural --- Physical sciences --- Dynamics --- Quantum dynamics --- Quantum mechanics --- Quantum physics --- Physics --- Mechanics --- Thermodynamics --- 2020 Nobel Prize in physics. --- 2020 Nobel laureates in physics. --- 2020 Nobel laureates. --- Albert Einstein. --- Andrea Ghez. --- Einstein. --- Reinhard Genzel. --- Royal Swedish Academy of Sciences. --- Stockholm. --- black holes. --- general relativity. --- general theory of relativity. --- relativity.
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Einstein said that the most incomprehensible thing about the universe is that it is comprehensible. But was he right? Can the quantum theory of fields and Einstein's general theory of relativity, the two most accurate and successful theories in all of physics, be united into a single quantum theory of gravity? Can quantum and cosmos ever be combined? In The Nature of Space and Time, two of the world's most famous physicists-Stephen Hawking (A Brief History of Time) and Roger Penrose (The Road to Reality)-debate these questions.The authors outline how their positions have further diverged on a number of key issues, including the spatial geometry of the universe, inflationary versus cyclic theories of the cosmos, and the black-hole information-loss paradox. Though much progress has been made, Hawking and Penrose stress that physicists still have further to go in their quest for a quantum theory of gravity.
Astrophysics. --- Cosmology. --- Quantum theory. --- Space and time. --- Space and time --- Quantum theory --- Astrophysics --- Cosmology --- Physics --- Physical Sciences & Mathematics --- Atomic Physics --- Astronomical physics --- Quantum dynamics --- Quantum mechanics --- Quantum physics --- Space of more than three dimensions --- Space-time --- Space-time continuum --- Space-times --- Spacetime --- Time and space --- Astrofysica --- Astronomische fysica --- Fysica [Astronomische ] --- Kosmologie --- Physics [Astronomical ] --- Physique astronomique --- Ruimte en tijd --- Temps et espace --- Tijd en ruimte --- Universe --- Astronomy --- Deism --- Metaphysics --- Cosmic physics --- Mechanics --- Thermodynamics --- Fourth dimension --- Infinite --- Philosophy --- Space sciences --- Time --- Beginning --- Hyperspace --- Relativity (Physics) --- Theory of relativity. Unified field theory --- Espace et temps --- Théorie quantique --- Astrophysique --- Cosmologie --- Space-time model --- 2020 Nobel Prize in physics. --- 2020 Nobel laureates in physics. --- 2020 Nobel laureates. --- Albert Einstein. --- Andrea Ghez. --- Einstein. --- Reinhard Genzel. --- Royal Swedish Academy of Sciences. --- Stockholm. --- black holes. --- general relativity. --- general theory of relativity. --- relativity.
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