Timeless Quantum Mechanics And The Early Universe
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Timeless Quantum Mechanics And The Early Universe
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Author : Leonardo Chataignier
language : en
Publisher: Springer Nature
Release Date : 2022-04-04
Timeless Quantum Mechanics And The Early Universe written by Leonardo Chataignier and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-04-04 with Science categories.
The book is based on the author's PhD thesis, which deals with the concept of time in quantum gravity and its relevance for the physics of the early Universe. It presents a consistent and complete new relational formulation of quantum gravity (more specifically, of quantum mechanics models with diffeomorphism invariance), which is applied to potentially observable cosmological effects. The work provides answers to the following questions: How can the dynamics of quantum states of matter and geometry be defined in a diffeomorphism-invariant way? What is the relevant space of physical states and which operators act on it? How are the quantum states related to probabilities in the absence of a preferred time? The answers can provide a further part of the route to constructing a fundamental theory of quantum gravity. The book is well-suited to graduate students as well as professional researchers in the fields of general relativity and gravitation, cosmology, and quantum foundations.
Timeless Reality
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Author : Victor J. Stenger
language : en
Publisher:
Release Date : 2000
Timeless Reality written by Victor J. Stenger and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with Philosophy categories.
If you complained to Stenger (physics and astronomy, U. of Hawaii) that you had no time, he would shrug and say nothing does. He explains to educated lay readers that time is reversible and that the underlying reality of all phenomenon may have no beginning and no end. He argues that based on established principles of simplicity and symmetry, at its deepest level reality is literally timeless, and that many universes may exist with different structures and laws from this one. Annotation copyrighted by Book News, Inc., Portland, OR
Time Reborn
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Author : Lee Smolin
language : en
Publisher: HMH
Release Date : 2013-04-23
Time Reborn written by Lee Smolin and has been published by HMH this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-04-23 with Science categories.
A radical new view of the nature of time and the cosmos—“at once entertaining, thought-provoking, fabulously ambitious and fabulously speculative” (The New York Times Book Review). What is time? This deceptively simple question is the single most important problem facing science as we probe deeper into the fundamentals of the universe. All of the mysteries physicists and cosmologists face—from the Big Bang to the future of the universe, from the puzzles of quantum physics to the unification of forces and particles—come down to the nature of time. The fact that time is real may seem obvious. You experience it passing every day when you watch clocks tick, bread toast, and children grow. But most physicists, from Newton to Einstein to today’s quantum theorists, have seen things differently. The scientific case for time being an illusion is formidable. That is why the consequences of adopting the view that time is real are revolutionary. Here, the author of The Trouble with Physics argues that a limited notion of time is holding physics back—and what we need now is a major shift in scientific thought. The true reality of this manmade construct could be the key to the next big breakthrough in theoretical physics—and could hold implications relevant to issues from climate change to the economy. What if the laws of physics themselves were not ageless? What if they could evolve? Time Reborn offers a radical approach to cosmology that embraces the concept of time and opens up a whole new universe of possibilities. “With rare conceptual daring, Smolin beckons toward a new perspective for doing cosmological theory . . . A thrilling intellectual ride.” —Booklist, starred review
The End Of Time
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Author : Julian Barbour
language : en
Publisher: Oxford University Press
Release Date : 2001-11-29
The End Of Time written by Julian Barbour and has been published by Oxford University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001-11-29 with Science categories.
Provides basic evidence for the nonexistence of time, explaining what a timeless universe is like and showing how the nonexistence of time solves a great paradox of modern science.
Quantum Cosmology The Supersymmetric Perspective Vol 2
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Author : Paulo Vargas Moniz
language : en
Publisher: Springer
Release Date : 2010-04-02
Quantum Cosmology The Supersymmetric Perspective Vol 2 written by Paulo Vargas Moniz and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-04-02 with Science categories.
We read in order to know we are not alone, I once heard, and perhaps it could also be suggested that we write in order not to be alone, to endorse, to promote continuity. The idea for this book took about 10 years to materialize, and it is the author’s hope that its content will constitute the beginning of further explorations beyond current horizons. More speci cally, this book appeals to the reader to engage upon and persevere with a journey, moving through the less well explored territories in the evolution of the very early universe, and pushing towards new landscapes. P- haps, during or after consulting this book, this attitude and this willingness will be embraced by someone, somewhere, and this person will go on to enrich our quantum cosmological description of the early universe, by means of a clearer supersymm- ric perspective. It is to these creative and inquisitive ‘young minds’ that the book is addressed. The reader will not therefore nd in this book all the answers to all the problems regarding a supersymmetric and quantum description of the early universe, and this remark is substantiated in the book by a list of unresolved and challenging problems, itself incomplete.
Gravity Gauge Theories And Quantum Cosmology
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Author : J.V. Narlikar
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Gravity Gauge Theories And Quantum Cosmology written by J.V. Narlikar and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Science categories.
For several decades since its inception, Einstein's general theory of relativity stood somewhat aloof from the rest of physics. Paradoxically, the attributes which normally boost a physical theory - namely, its perfection as a theoreti cal framework and the extraordinary intellectual achievement underlying i- prevented the general theory from being assimilated in the mainstream of physics. It was as if theoreticians hesitated to tamper with something that is manifestly so beautiful. Happily, two developments in the 1970s have narrowed the gap. In 1974 Stephen Hawking arrived at the remarkable result that black holes radiate after all. And in the second half of the decade, particle physicists discovered that the only scenario for applying their grand unified theories was offered by the very early phase in the history of the Big Bang universe. In both cases, it was necessary to discuss the ideas of quantum field theory in the background of curved spacetime that is basic to general relativity. This is, however, only half the total story. If gravity is to be brought into the general fold of theoretical physics we have to know how to quantize it. To date this has proved a formidable task although most physicists would agree that, as in the case of grand unified theories, quantum gravity will have applications to cosmology, in the very early stages of the Big Bang universe. In fact, the present picture of the Big Bang universe necessarily forces us to think of quantum cosmology.
Quantum Structure Of Space And Time
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Author : M. J. Duff
language : en
Publisher: CUP Archive
Release Date : 1982-12-16
Quantum Structure Of Space And Time written by M. J. Duff and has been published by CUP Archive this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982-12-16 with Science categories.
This book was first published in 1982. It consists of selected contributions presented at the Nuffield Quantum Gravity Workshop held at Imperial College, London, in August 1981. The book is divided into three parts which correspond with the three separate themes pursued at the workshop. Part I is concerned with the geometrical and topological aspects of quantum gravity. Part II focuses on supergravity and its application to the Grand Unified Theories of elementary particles. Part III concentrates on the early universe and cosmology. The book, therefore, covers not only supergravity, but the whole spectrum of quantum gravity research.
Once Before Time
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Author : Martin Bojowald
language : en
Publisher: Knopf
Release Date : 2010
Once Before Time written by Martin Bojowald and has been published by Knopf this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with Science categories.
Traces how the physics professor author used a new theory of loop quantum gravity to create a simple model of the universe that launched loop quantum cosmology, in a report that presents a step-by-step argument about the origins of the universe.
The Infinite History Of Now
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Author : Davide Fiscaletti
language : en
Publisher: Nova Science Publishers
Release Date : 2014
The Infinite History Of Now written by Davide Fiscaletti and has been published by Nova Science Publishers this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with Physics categories.
The development of theoretical physics can be seen as a continuous improvement of the models of space and time. In particular, the beginning of the 21st century brought a new vision into quantum physics: quantum particles move in space only, time measured with clocks is merely a numerical order of particles' motion. This so called "a-temporal" view of physics offers a radically new understanding of the micro and macro universe. On the basis of the notion of time as numerical order of material change, in this book the authors introduce suggestive unitary and holistic perspectives in the interpretation and explanation of several physical phenomena of contemporary physics. It is shown that the concept of time as a mathematical quantity measuring the numerical order of material changes resolves Zeno problems on motion, hypothetical travel into past, twin paradox of special relativity and allow new perspectives to be opened in the interpretation and explanation of Einstein-Podolski-Rosen experiment and of non-local correlations between subatomic particles. Moreover, a timeless description of the gravitational interaction and the idea of a timeless three-dimensional quantum vacuum as a fundamental bridge between gravity and quantum behaviour of matter are developed. Finally, in the second part of the book, after analysing the fundamental features of some relevant unitary theories of contemporary physics (such as superstring theory and loop quantum gravity) and making some considerations about being versus becoming and atomism versus monism in modelling physical reality at a fundamental level, it is shown that the replacement of the concept of time with the numerical order of material change provides a new suggestive interpretation of the fundamental unitary field theories opening the doors to a real "timeless theory of everything". The use of a simple and fluid language makes the book accessible to a wide reading public.
Loop Quantum Gravity The First 30 Years
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Author : Abhay Ashtekar
language : en
Publisher: World Scientific
Release Date : 2017-03-16
Loop Quantum Gravity The First 30 Years written by Abhay Ashtekar and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-03-16 with Science categories.
'Written by young theoretical physicists who are experts in the field, this volume is meant both to provide an introduction to the field and to offer a review of the latest developments, not discussed in many other existing books, for senior researchers. It will also appeal to scientists who do not work directly on LQG but are interested in issues at the interface of general relativity and quantum physics.'CERN CourierThis volume presents a snapshot of the state-of-the-art in loop quantum gravity from the perspective of younger leading researchers. It takes the reader from the basics to recent advances, thereby bridging an important gap.The aim is two-fold — to provide a contemporary introduction to the entire field for students and post-docs, and to present an overview of the current status for more senior researchers. The contributions include the latest developments that are not discussed in existing books, particularly recent advances in quantum dynamics both in the Hamiltonian and sum over histories approaches; and applications to cosmology of the early universe and to the quantum aspects of black holes.