Modern Canonical Quantum General Relativity

Modern Canonical Quantum General Relativity

Author: Thomas Thiemann

Publisher: Cambridge University Press

Published: 2008-11-13

Total Pages: 739

ISBN-13: 113946759X

DOWNLOAD EBOOK

This book provides a complete treatise of the canonical quantisation of general relativity and the loop quantum gravity theory. Mathematical concepts are provided, so it can be read by graduate students with a basic knowledge of quantum field theory or general relativity.


What Is Real?

What Is Real?

Author: Adam Becker

Publisher: Basic Books

Published: 2018-03-20

Total Pages: 389

ISBN-13: 0465096069

DOWNLOAD EBOOK

"A thorough, illuminating exploration of the most consequential controversy raging in modern science." --New York Times Book Review An Editor's Choice, New York Times Book Review Longlisted for PEN/E.O. Wilson Prize for Literary Science Writing Longlisted for Goodreads Choice Award Every physicist agrees quantum mechanics is among humanity's finest scientific achievements. But ask what it means, and the result will be a brawl. For a century, most physicists have followed Niels Bohr's solipsistic and poorly reasoned Copenhagen interpretation. Indeed, questioning it has long meant professional ruin, yet some daring physicists, such as John Bell, David Bohm, and Hugh Everett, persisted in seeking the true meaning of quantum mechanics. What Is Real? is the gripping story of this battle of ideas and the courageous scientists who dared to stand up for truth. "An excellent, accessible account." --Wall Street Journal "Splendid. . . . Deeply detailed research, accompanied by charming anecdotes about the scientists." --Washington Post


Quantum gravity without trouble

Quantum gravity without trouble

Author: René Friedrich

Publisher: BoD – Books on Demand

Published: 2024-07-02

Total Pages: 188

ISBN-13: 3759701175

DOWNLOAD EBOOK

A large panorama of innovative suggestions and ideas for people interested in physics. Instead of complex theories and mathematical speculation, direct possibilities of pertinent simplification are shown, so that general relativity including quantum gravity is becoming accessible to a large audience. Prior knowledge of special relativity is recommended, but an overview is provided in the introduction. Contents: - Special relativity, briefly - The nature of time - The mistaken assumption of a spacetime manifold - Quantum gravity by elimination of spacetime - Black holes: the infinity at the event horizon - Gravitational attraction and repulsion - Understanding the wave-particle duality of light


Conversations on Quantum Gravity

Conversations on Quantum Gravity

Author: Jácome Armas

Publisher: Cambridge University Press

Published: 2021-08-26

Total Pages: 719

ISBN-13: 1107168872

DOWNLOAD EBOOK

Leading theorists share their important insights into the ongoing quest of theoretical physics to find a quantum theory of gravity.


Einstein's Unfinished Revolution

Einstein's Unfinished Revolution

Author: Lee Smolin

Publisher: Knopf Canada

Published: 2019-04-09

Total Pages: 347

ISBN-13: 0345809122

DOWNLOAD EBOOK

A daring new vision of the quantum universe, and the scandals controversies, and questions that may illuminate our future--from Canada's leading mind on contemporary physics. Quantum physics is the golden child of modern science. It is the basis of our understanding of atoms, radiation, and so much else, from elementary particles and basic forces to the behaviour of materials. But for a century it has also been the problem child of science, plagued by intense disagreements between its intellectual giants, from Albert Einstein to Stephen Hawking, over the strange paradoxes and implications that seem like the stuff of fantasy. Whether it's Schrödinger's cat--a creature that is simultaneously dead and alive--or a belief that the world does not exist independently of our observations of it, quantum theory is what challenges our fundamental assumptions about our reality. In Einstein's Unfinished Revolution, globally renowned theoretical physicist Lee Smolin provocatively argues that the problems which have bedeviled quantum physics since its inception are unsolved for the simple reason that the theory is incomplete. There is more, waiting to be discovered. Our task--if we are to have simple answers to our simple questions about the universe we live in--must be to go beyond it to a description of the world on an atomic scale that makes sense. In this vibrant and accessible book, Smolin takes us on a journey through the basics of quantum physics, introducing the stories of the experiments and figures that have transformed the field, before wrestling with the puzzles and conundrums that they present. Along the way, he illuminates the existing theories about the quantum world that might solve these problems, guiding us toward his own vision that embraces common sense realism. If we are to have any hope of completing the revolution that Einstein began nearly a century ago, we must go beyond quantum mechanics as we know it to find a theory that will give us a complete description of nature. In Einstein's Unfinished Revolution, Lee Smolin brings us a step closer to resolving one of the greatest scientific controversies of our age.


Not Even Wrong

Not Even Wrong

Author: Peter Woit

Publisher: Basic Books

Published: 2007-03-09

Total Pages: 336

ISBN-13: 046500363X

DOWNLOAD EBOOK

At what point does theory depart the realm of testable hypothesis and come to resemble something like aesthetic speculation, or even theology? The legendary physicist Wolfgang Pauli had a phrase for such ideas: He would describe them as "not even wrong," meaning that they were so incomplete that they could not even be used to make predictions to compare with observations to see whether they were wrong or not. In Peter Woit's view, superstring theory is just such an idea. In Not Even Wrong , he shows that what many physicists call superstring "theory" is not a theory at all. It makes no predictions, even wrong ones, and this very lack of falsifiability is what has allowed the subject to survive and flourish. Not Even Wrong explains why the mathematical conditions for progress in physics are entirely absent from superstring theory today and shows that judgments about scientific statements, which should be based on the logical consistency of argument and experimental evidence, are instead based on the eminence of those claiming to know the truth. In the face of many books from enthusiasts for string theory, this book presents the other side of the story.


Lectures on Quantum Mechanics

Lectures on Quantum Mechanics

Author: Steven Weinberg

Publisher: Cambridge University Press

Published: 2013

Total Pages: 379

ISBN-13: 1107028728

DOWNLOAD EBOOK

"Ideally suited to a one-year graduate course, this textbook is also a useful reference for researchers. Readers are introduced to the subject through a review of the history of quantum mechanics and an account of classic solutions of the Schr.


Quantum Gravity

Quantum Gravity

Author: Carlo Rovelli

Publisher: Cambridge University Press

Published: 2007-11-29

Total Pages: 516

ISBN-13: 1139456156

DOWNLOAD EBOOK

Quantum gravity is perhaps the most important open problem in fundamental physics. It is the problem of merging quantum mechanics and general relativity, the two great conceptual revolutions in the physics of the twentieth century. The loop and spinfoam approach, presented in this 2004 book, is one of the leading research programs in the field. The first part of the book discusses the reformulation of the basis of classical and quantum Hamiltonian physics required by general relativity. The second part covers the basic technical research directions. Appendices include a detailed history of the subject of quantum gravity, hard-to-find mathematical material, and a discussion of some philosophical issues raised by the subject. This fascinating text is ideal for graduate students entering the field, as well as researchers already working in quantum gravity. It will also appeal to philosophers and other scholars interested in the nature of space and time.


Something Deeply Hidden

Something Deeply Hidden

Author: Sean Carroll

Publisher: Penguin

Published: 2020-09-01

Total Pages: 369

ISBN-13: 1524743038

DOWNLOAD EBOOK

INSTANT NEW YORK TIMES BESTSELLER As you read these words, copies of you are being created. Sean Carroll, theoretical physicist and one of this world’s most celebrated writers on science, rewrites the history of twentieth-century physics. Already hailed as a masterpiece, Something Deeply Hidden shows for the first time that facing up to the essential puzzle of quantum mechanics utterly transforms how we think about space and time. His reconciling of quantum mechanics with Einstein’s theory of relativity changes, well, everything. Most physicists haven’t even recognized the uncomfortable truth: Physics has been in crisis since 1927. Quantum mechanics has always had obvious gaps—which have come to be simply ignored. Science popularizers keep telling us how weird it is, how impossible it is to understand. Academics discourage students from working on the "dead end" of quantum foundations. Putting his professional reputation on the line with this audacious yet entirely reasonable book, Carroll says that the crisis can now come to an end. We just have to accept that there is more than one of us in the universe. There are many, many Sean Carrolls. Many of every one of us. Copies of you are generated thousands of times per second. The Many-Worlds theory of quantum behavior says that every time there is a quantum event, a world splits off with everything in it the same, except in that other world the quantum event didn't happen. Step-by-step in Carroll's uniquely lucid way, he tackles the major objections to this otherworldly revelation until his case is inescapably established. Rarely does a book so fully reorganize how we think about our place in the universe. We are on the threshold of a new understanding—of where we are in the cosmos, and what we are made of.