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Author: Jácome (Jay) Armas Publisher: Cambridge University Press ISBN: 1316731871 Category : Science Languages : en Pages :
Book Description
The holy grail of theoretical physics is to find the theory of everything that combines all the forces of nature, including gravity. This book addresses the question: how far are we from such discovery? Over the last few decades, multiple roads to finding a quantum theory of gravity have been proposed but no obvious description of nature has emerged in this domain. What is to be made of this situation? This volume probes the state-of-the art in this daunting quest of theoretical physics by collecting critical interviews with nearly forty leading theorists in this field. These broad-ranging conversations give important insights and candid opinions on the various approaches to quantum gravity, including string theory, loop quantum gravity, causal set theory and asymptotic safety. This unique, readable overview provides a gateway into cutting edge research for students and others who wish to engage with the open problem of quantum gravity.
Author: Jim Baggott Publisher: Oxford University Press ISBN: 019253680X Category : Science Languages : en Pages : 320
Book Description
Today we are blessed with two extraordinarily successful theories of physics. The first is Albert Einstein's general theory of relativity, which describes the large-scale behaviour of matter in a curved spacetime. This theory is the basis for the standard model of big bang cosmology. The discovery of gravitational waves at the LIGO observatory in the US (and then Virgo, in Italy) is only the most recent of this theory's many triumphs. The second is quantum mechanics. This theory describes the properties and behaviour of matter and radiation at their smallest scales. It is the basis for the standard model of particle physics, which builds up all the visible constituents of the universe out of collections of quarks, electrons and force-carrying particles such as photons. The discovery of the Higgs boson at CERN in Geneva is only the most recent of this theory's many triumphs. But, while they are both highly successful, these two structures leave a lot of important questions unanswered. They are also based on two different interpretations of space and time, and are therefore fundamentally incompatible. We have two descriptions but, as far as we know, we've only ever had one universe. What we need is a quantum theory of gravity. Approaches to formulating such a theory have primarily followed two paths. One leads to String Theory, which has for long been fashionable, and about which much has been written. But String Theory has become mired in problems. In this book, Jim Baggott describes ": an approach which takes relativity as its starting point, and leads to a structure called Loop Quantum Gravity. Baggott tells the story through the careers and pioneering work of two of the theory's most prominent contributors, Lee Smolin and Carlo Rovelli. Combining clear discussions of both quantum theory and general relativity, this book offers one of the first efforts to explain the new quantum theory of space and time.
Author: Nick Huggett Publisher: Cambridge University Press ISBN: 110847702X Category : Philosophy Languages : en Pages : 371
Book Description
A collection of essays discussing the philosophy and foundations of quantum gravity. Written by leading philosophers and physicists in the field, chapters cover the important conceptual questions in the search for a quantum theory of gravity, and the current state of understanding among philosophers and physicists.
Author: Daniele Oriti Publisher: Cambridge University Press ISBN: 0521860458 Category : Science Languages : en Pages : 605
Book Description
Containing contributions from leading researchers in this field, this book provides a complete overview of this field from the frontiers of theoretical physics research for graduate students and researchers. It introduces the most current approaches to this problem, and reviews their main achievements.
Author: Howard Burton Publisher: Open Agenda Publishing ISBN: 177170148X Category : Science Languages : en Pages : 262
Book Description
Conversations About Physics, Volume 1, includes the following 5 carefully-edited Ideas Roadshow Conversations featuring leading physicists. This collection includes a detailed preface highlighting the connections between the different books. Each book is broken into chapters with a detailed introduction and questions for discussion at the end of each chapter: 1.The Power of Principles: Physics Revealed - A Conversation with Nima Arkani-Hamed, faculty member at the renowned Institute for Advanced Study in Princeton. Prof. Arkani-Hamed is one of today’s leading particle physicists. This extensive Ideas Roadshow conversation explores how we discover the laws of nature, the “scientific method”, the relation between theory and experiment and how we can push our understanding well beyond where experiments can currently reach. 2.Cryptoreality - A Conversation with Artur Ekert, Professor of Quantum Physics at the Mathematical Institute at the University of Oxford and Director of the Centre for Quantum Technologies and Lee Kong Chian Centennial Professor at the National University of Singapore. Artur Ekert is one of the pioneers of quantum cryptography. This wide-ranging conversation provides detailed insights into his research and covers many fascinating topics such as mathematical and physical intuition, a detailed history of cryptography from antiquity to the present day and how it works in practice, the development of quantum information science, the nature of reality, and more. 3.The Problems of Physics, Reconsidered - A Conversation with Physics Nobel Laureate Tony Leggett, University of Illinois. The basis of this conversation is Tony Leggett’s book The Problems of Physics and further explores the insightful plain-speaking itemization that he developed of the physics landscape according to four basic categories—the very small (particle physics), the very large (cosmology), the very complex (condensed matter physics) and the very unclear (foundations of quantum theory)—while providing a thoughtful follow-up analysis from a contemporary perspective to assess how much progress we’ve made and which mysteries remain or have come on the scene since the book was published. 4.The Physics of Banjos - A Conversation with David Politzer, 2004 Nobel Laureate and the Richard Chace Tolman Professor of Theoretical Physics at Caltech. This extensive conversation examines many of the intriguing aspects associated with the physics of banjos, including the ocarina effect, string-stretching, the subtleties of how we hear pitch, transient growth, and the mysterious ringing sound of banjos; while also touching briefly on contemporary issues in black holes and particle physics. 5. Indiana Steinhardt and the Quest for Quasicrystals - A Conversation with Paul Steinhardt, the Albert Einstein Professor of Science and Director of the Center for Theoretical Science at Princeton University. This extensive conversation provides a comprehensive account of a marvellous scientific adventure story in the quest for a natural quasicrystal. The reader will be taken on a fascinating ride through the physics of materials, from theory, to the laboratory, to the discovery of a new state of matter, that culminated in Paul Steinhardt’s dramatic Siberian expedition. Paul Steinhardt talks about his encounters with mineral smugglers, secret diaries and quasi-mythical characters during his “Indiana Jones” expedition from Florence to Israel, Amsterdam to California, Princeton to Kamchatka which led him to find quasicrystals that are quite literally out of this world… Howard Burton is the founder and host of all Ideas Roadshow Conversations and was the Founding Executive Director of Perimeter Institute for Theoretical Physics. He holds a PhD in theoretical physics and an MA in philosophy.
Author: Domenico J. W. Giulini Publisher: Springer Science & Business Media ISBN: 9783540408109 Category : Science Languages : en Pages : 426
Book Description
The relation between quantum theory and the theory of gravitation remains one of the most outstanding unresolved issues of modern physics. According to general expectation, general relativity as well as quantum (field) theory in a fixed background spacetime cannot be fundamentally correct. Hence there should exist a broader theory comprising both in appropriate limits, i.e., quantum gravity. This book gives readers a comprehensive introduction accessible to interested non-experts to the main issues surrounding the search for quantum gravity. These issues relate to fundamental questions concerning the various formalisms of quantization; specific questions concerning concrete processes, like gravitational collapse or black-hole evaporation; and the all important question concerning the possibility of experimental tests of quantum-gravity effects.
Author: Dean Rickles Publisher: Oxford University Press ISBN: 0199269696 Category : Mathematics Languages : en Pages : 283
Book Description
What is spacetime? General relativity and quantum field theory answer this question in different ways. This collection of essays looks at the problem of uniting these two fundamental theories of our world, focusing on the nature of space and time within this quantum framework.
Author: G. W. Gibbons Publisher: World Scientific ISBN: 9789810205164 Category : Science Languages : en Pages : 604
Book Description
The Euclidean approach to Quantum Gravity was initiated almost 15 years ago in an attempt to understand the difficulties raised by the spacetime singularities of classical general relativity which arise in the gravitational collapse of stars to form black holes and the entire universe in the Big Bang. An important motivation was to develop an approach capable of dealing with the nonlinear, non-perturbative aspects of quantum gravity due to topologically non-trivial spacetimes. There are important links with a Riemannian geometry. Since its inception the theory has been applied to a number of important physical problems including the thermodynamic properties of black holes, quantum cosmology and the problem of the cosmological constant. It is currently at the centre of a great deal of interest.This is a collection of survey lectures and reprints of some important lectures on the Euclidean approach to quantum gravity in which one expresses the Feynman path integral as a sum over Riemannian metrics. As well as papers on the basic formalism there are sections on Black Holes, Quantum Cosmology, Wormholes and Gravitational Instantons.
Author: Clifford V. Johnson Publisher: MIT Press ISBN: 0262536080 Category : Science Languages : en Pages : 0
Book Description
A series of conversations about science in graphic form, on subjects that range from the science of cooking to the multiverse. Physicist Clifford Johnson thinks that we should have more conversations about science. Science should be on our daily conversation menu, along with topics like politics, books, sports, or the latest prestige cable drama. Conversations about science, he tells us, shouldn't be left to the experts. In The Dialogues, Johnson invites us to eavesdrop on a series of nine conversations, in graphic-novel form—written and drawn by Johnson—about “the nature of the universe.” The conversations take place all over the world, in museums, on trains, in restaurants, in what may or may not be Freud's favorite coffeehouse. The conversationalists are men, women, children, experts, and amateur science buffs. The topics of their conversations range from the science of cooking to the multiverse and string theory. The graphic form is especially suited for physics; one drawing can show what it would take many words to explain. In the first conversation, a couple meets at a costume party; they speculate about a scientist with superhero powers who doesn't use them to fight crime but to do more science, and they discuss what it means to have a “beautiful equation” in science. Their conversation spills into another chapter (“Hold on, you haven't told me about light yet”), and in a third chapter they exchange phone numbers. Another couple meets on a train and discusses immortality, time, black holes, and religion. A brother and sister experiment with a grain of rice. Two women sit in a sunny courtyard and discuss the multiverse, quantum gravity, and the anthropic principle. After reading these conversations, we are ready to start our own.
Author: Jácome Armas
Author: Jácome Armas
Author: Jácome (Jay) Armas
Author: Jim Baggott
Author: Nick Huggett
Author: Daniele Oriti
Author: Howard Burton
Author: Domenico J. W. Giulini
Author: Dean Rickles
Author: G. W. Gibbons
Author: Clifford V. Johnson