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The Nature of Space and Time
Roger Penrose, Stephen Hawking
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Naturwissenschaften, Medizin, Informatik, Technik / Physik, Astronomie
Description
From two of the world's great physicists—Stephen Hawking and Nobel laureate Roger Penrose—a lively debate about the nature of space and time
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.
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Particle physics, Event horizon, Uncertainty, Quantum cosmology, Cosmic microwave background, Stephen Hawking, Euler number (physics), Quantum gravity, Gravitational field, Asymmetry, Theorem, Prediction, Supergravity, Wormhole, Ray (optics), Cosmological constant, Second law of thermodynamics, Thermal fluctuations, Curvature, Measurement, Chronology of the universe, Photon, Penrose–Hawking singularity theorems, Calculation, Density matrix, Euclidean space, Minkowski space, Quantum state, General relativity, White hole, Energy condition, Weyl curvature hypothesis, Roger Penrose, Weyl tensor, Gravitational singularity, Theory, Gravitational collapse, Kerr metric, Field (physics), Big Bang, Geodesy, Theoretical physics, Planck length, Yang–Mills theory, Twistor space, Wave function, Inflation (cosmology), Imaginary time, Quantum fluctuation, Black hole thermodynamics, Cosmic censorship hypothesis, Shape of the universe, Gravitational wave, Path integral, Schwarzschild metric, Black hole information paradox, Twistor theory, Probability, Graviton, Einstein field equations, Phase space, Quantum mechanics, String theory, Riemann sphere, Expectation value (quantum mechanics), No-hair theorem, Quantum field theory, Gravity, Quantum decoherence, Ultimate fate of the universe