The Physics Of Time Reversal

Author : Robert G. Sachs
Publisher : University of Chicago Press
ISBN 13 : 0226733319
Total Pages : 326 pages
Book Rating : 4.19/5 ( download)

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Download or read book The Physics of Time Reversal written by Robert G. Sachs and published by University of Chicago Press. This book was released on 1987 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: The notion that fundamental equations governing the motions of physical systems are invariant under the time reversal transformation (T) has been an important, but often subliminal, element in the development of theoretical physics. It serves as a powerful and useful tool in analyzing the structure of matter at all scales, from gases and condensed matter to subnuclear physics and the quantum theory of fields. The assumption of invariance under T was called into question, however, by the 1964 discovery that a closely related assumption, that of CP invariance (where C is charge conjugation and P is space inversion), is violated in the decay of neutral K mesons. In The Physics of Time Reversal, Robert G. Sachs comprehensively treats the role of the transformation T, both as a tool for analyzing the structure of matter and as a field of fundamental research relating to CP violation. For this purpose he reformulates the definitions of T, P, and C so as to avoid subliminal assumptions of invariance. He summarizes the standard phenomenology of CP violation in the K-meson system and addresses the question of the mysterious origin of CP violation. Using simple examples based on the standard quark model, Sachs summarizes and illustrates how these phenomenological methods can be extended to analysis of future experiments on heavy mesons. He notes that his reformulated approach to conventional quantum field theory leads to new questions about the meaning of the transformations in the context of recent theoretical developments such as non-Abelian gauge theories, and he suggests ways in which these questions may lead to new directions of research.

Author : Ion I. Geru
Publisher : Springer
ISBN 13 : 3030012107
Total Pages : 362 pages
Book Rating : 4.06/5 ( download)

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Download or read book Time-Reversal Symmetry written by Ion I. Geru and published by Springer. This book was released on 2018-12-31 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces new developments in the field of Time-Reversal Symmetry presenting, for the first time, the Wigner time-reversal operator in the form of a product of two- or three time-reversal operators of lower symmetry. The action of these operators leads to the sign change of only one or two angular momentum components, not of all of them. It demonstrates that there are six modes of time-reversal symmetry breaking that do not lead to the complete disappearance of the symmetry but to its lowering. The full restoration of the time-reversal symmetry in the six cases mentioned is possible by introducing six types of metaparticles. The book also confirms the presence of six additional time-reversal operators using a group-theoretical method. The problem is only where to seek these metaparticles. The book discusses time-reversal symmetry in classical mechanics, classical and relativistic electrodynamics, quantum mechanics and theory of quantized fields, including dynamical reversibility and statistical irreversibility of the time, Wigner’s and Herring’s criteria, Kramers theorem, selection rules due to time-reversal symmetry, Onsager’s relations, Poincaré recurrence theorem, and CPT theorem. It particularly focuses attention on time-reversal symmetry violation. It is proposed a new method of testing the time-reversal symmetry, which is confirmed experimentally by EPR spectroscopy data. It shows that the traditional black-white point groups of magnetic symmetry are not applicable to magnetic systems with Kramers degeneration of energy levels and that magnetic groups of four-color symmetry are adequate for them. Further, it addresses the predicted structural distortions in Kramers three-homonuclear magnetic clusters due to time-reversal symmetry that have been identified experimentally. Lastly, it proposes a method of synthesis of two-nuclear coordination compounds with predictable magnetic properties, based on the application of the time-reversal transformation that was confirmed experimentally.

Author : H. Dieter Zeh
Publisher : Springer Science & Business Media
ISBN 13 : 3662027593
Total Pages : 194 pages
Book Rating : 4.92/5 ( download)

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Download or read book The Physical Basis of The Direction of Time written by H. Dieter Zeh and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: The asymmetry of natural phenomena under time reversal is striking. Here Zehinvestigates the most important classes of physical phenomena that characterize the arrow of time, discussing their interrelations as well as striving to uncover a cosmological common root of the phenomena, such as the time-independent wave function of the universe. The description of irreversible phenomena is shown to be fundamentally "observer-related". Both physicists and philosophers of science who reviewed the first edition considered this book a magnificent survey, a concise, technically sophisticated, up-to-date discussion of the subject, showing fine sensivity to some of the crucial philosophicalsubtleties. This new and expanded edition will be welcomed by both students and specialists.

Author : C. Altman
Publisher : Springer Science & Business Media
ISBN 13 : 9401579156
Total Pages : 299 pages
Book Rating : 4.55/5 ( download)

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Download or read book Reciprocity, Spatial Mapping and Time Reversal in Electromagnetics written by C. Altman and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt: The choice of topics in this book may seem somewhat arbitrary, even though we have attempted to organize them in a logical structure. The contents reflect the path of 'search and discovery' followed by us, on and off, for the in fact last twenty years. In the winter of 1970-71 one of the authors (C. A. ), on sah baticalleave with L. R. O. Storey's research team at the Groupe de Recherches Ionospheriques at Saint-Maur in France, had been finding almost exact symme tries in the computed reflection and transmission matrices for plane-stratified magnetoplasmas when symmetrically related directions of incidence were com pared. At the suggestion of the other author (K. S. , also on leave at the same institute), the complex conjugate wave fields, used to construct the eigenmode amplitudes via the mean Poynting flux densities, were replaced by the adjoint wave fields that would propagate in a medium with transposed constitutve tensors, et voila, a scattering theorem-'reciprocity in k-space'-was found in the computer output. To prove the result analytically one had to investigate the properties of the adjoint Maxwell system, and the two independent proofs that followed, in 1975 and 1979, proceeded respectively via the matrizant method and the thin-layer scattering-matrix method for solving the scattering problem, according to the personal preferences of each of the authors. The proof given in Chap. 2 of this book, based on the hindsight provided by our later results, is simpler and much more concise.

Author : A. Abragam
Publisher :
ISBN 13 :
Total Pages : 400 pages
Book Rating : 4.48/5 ( download)

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Download or read book Time Reversal, an Autobiography written by A. Abragam and published by . This book was released on 1989 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the story of a physicist who will never see three score years and ten again, and who, during his long and chequered career, has lived through many events, met all kinds of people, known many distinguished scientists, and tried, not always successfully, to bring some original contributions to a field of physics born after the Second World War, nuclear magnetism.

Author : Robion C. Kirby
Publisher : Springer
ISBN 13 : 354046171X
Total Pages : 114 pages
Book Rating : 4.15/5 ( download)

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Download or read book The Topology of 4-Manifolds written by Robion C. Kirby and published by Springer. This book was released on 2006-11-14 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the classical theorems about simply connected smooth 4-manifolds: intersection forms and homotopy type, oriented and spin bordism, the index theorem, Wall's diffeomorphisms and h-cobordism, and Rohlin's theorem. Most of the proofs are new or are returbishings of post proofs; all are geometric and make us of handlebody theory. There is a new proof of Rohlin's theorem using spin structures. There is an introduction to Casson handles and Freedman's work including a chapter of unpublished proofs on exotic R4's. The reader needs an understanding of smooth manifolds and characteristic classes in low dimensions. The book should be useful to beginning researchers in 4-manifolds.

Author : Eleanor Knox
Publisher : Routledge
ISBN 13 : 1317227131
Total Pages : 1223 pages
Book Rating : 4.37/5 ( download)

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Download or read book The Routledge Companion to Philosophy of Physics written by Eleanor Knox and published by Routledge. This book was released on 2021-09-28 with total page 1223 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Routledge Companion to Philosophy of Physics is a comprehensive and authoritative guide to the state of the art in the philosophy of physics. It comprisess 54 self-contained chapters written by leading philosophers of physics at both senior and junior levels, making it the most thorough and detailed volume of its type on the market – nearly every major perspective in the field is represented. The Companion’s 54 chapters are organized into 12 parts. The first seven parts cover all of the major physical theories investigated by philosophers of physics today, and the last five explore key themes that unite the study of these theories. I. Newtonian Mechanics II. Special Relativity III. General Relativity IV. Non-Relativistic Quantum Theory V. Quantum Field Theory VI. Quantum Gravity VII. Statistical Mechanics and Thermodynamics VIII. Explanation IX. Intertheoretic Relations X. Symmetries XI. Metaphysics XII. Cosmology The difficulty level of the chapters has been carefully pitched so as to offer both accessible summaries for those new to philosophy of physics and standard reference points for active researchers on the front lines. An introductory chapter by the editors maps out the field, and each part also begins with a short summary that places the individual chapters in context. The volume will be indispensable to any serious student or scholar of philosophy of physics.

Author : Joseph Gabriel
Publisher : Cosmology Science Publishers
ISBN 13 : 9781938024221
Total Pages : 234 pages
Book Rating : 4.22/5 ( download)

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Download or read book Quantum Physics of Time Travel written by Joseph Gabriel and published by Cosmology Science Publishers. This book was released on 2014-03-18 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: Table of Contents 1: The Time Machine of Past Present and Future 2: Time Is Relative: Future, Past, Present Overlap and Exist Simultaneously 3: Time Dilation And The Contraction of Space Time 4: Twins, Time Travel, Gravity And Aging 5: Time Travel And Aging: Clocks, Gravity, Altitude, Longitude & Longevity 6: Acceleration, Light Speed, Time Travel, G-Forces And Fuel 7: The Curvature of Space-Time: Gravity and the Bending of Light and Time 8: The Circle of Time: In A Rotating Universe The Future Leads to the Past 9: Time Travel Through Black Holes in the Fabric of Space-Time 10: Microscopic Time Travel At the Speed of Light 11: "Worm Holes" In Extreme Curvatures of Space Time 12: Worm Holes, Negative Energy, Casimir Force And The Einstein-Rosen Bridge 13: Black Holes And Gravitational Sling Shots 14. The Time Traveler in Miniature: Negative Mass and Energy 15: Tachyons, Negative Energy, The Circle of Time: From the Future to the Past 16. Duality: The Past And Future In Parallel 17: The Mirror of Time: Red Shift, Blue Shifts and Duality 18. Into the Past: Duality, Anti-Matter and Conservation of Energy 19: Quantum Entanglement And Causality: The Future Effects the Past 20: Light, Wave Functions and the Uncertainty Principle: Changing the Future and the Past 21: Paradoxes of Time Travel and the Multiple Worlds of Quantum Physics 22. Epilogue: A Journey Though The Many Worlds of Time 23: References

Author : Bryan W. Roberts
Publisher : Cambridge University Press
ISBN 13 : 100930240X
Total Pages : 265 pages
Book Rating : 4.01/5 ( download)

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Download or read book Reversing the Arrow of Time written by Bryan W. Roberts and published by Cambridge University Press. This book was released on 2022-12-08 with total page 265 pages. Available in PDF, EPUB and Kindle. Book excerpt: The arrow of time refers to the curious asymmetry that distinguishes the future from the past. Reversing the Arrow of Time argues that there is an intimate link between the symmetries of 'time itself' and time reversal symmetry in physical theories, which has wide-ranging implications for both physics and its philosophy. This link helps to clarify how we can learn about the symmetries of our world; how to understand the relationship between symmetries and what is real, and how to overcome pervasive illusions about the direction of time. Roberts explains the significance of time reversal in a way that intertwines physics and philosophy, to establish what the arrow of time means and how we can come to know it. This book is both mathematically and philosophically rigorous yet remains accessible to advanced undergraduates in physics and philosophy of physics. This title is also available as Open Access on Cambridge Core.

Author : David Z Albert
Publisher : Harvard University Press
ISBN 13 : 0674020138
Total Pages : 188 pages
Book Rating : 4.39/5 ( download)

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Download or read book Time and Chance written by David Z Albert and published by Harvard University Press. This book was released on 2003-02-28 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is an attempt to get to the bottom of an acute and perennial tension between our best scientific pictures of the fundamental physical structure of the world and our everyday empirical experience of it. The trouble is about the direction of time. The situation (very briefly) is that it is a consequence of almost every one of those fundamental scientific pictures--and that it is at the same time radically at odds with our common sense--that whatever can happen can just as naturally happen backwards. Albert provides an unprecedentedly clear, lively, and systematic new account--in the context of a Newtonian-Mechanical picture of the world--of the ultimate origins of the statistical regularities we see around us, of the temporal irreversibility of the Second Law of Thermodynamics, of the asymmetries in our epistemic access to the past and the future, and of our conviction that by acting now we can affect the future but not the past. Then, in the final section of the book, he generalizes the Newtonian picture to the quantum-mechanical case and (most interestingly) suggests a very deep potential connection between the problem of the direction of time and the quantum-mechanical measurement problem. The book aims to be both an original contribution to the present scientific and philosophical understanding of these matters at the most advanced level, and something in the nature of an elementary textbook on the subject accessible to interested high-school students.