Quantum Fluctuations

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Photons and Quantum Fluctuations

Author : E. R. Pike,H. Walther
Publisher : CRC Press
Page : 231 pages
File Size : 47,8 Mb
Release : 2020-08-26
Category : Science
ISBN : 9781000112214

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Photons and Quantum Fluctuations by E. R. Pike,H. Walther Pdf

Based on a special ONR seminar, Photons and Quantum Fluctuations draws together discoveries in nonclassical or "silent" light for research workers and postgraduates in quantum optics. With nonclassical light, noise is reduced in amplitude below that expected by previous applications of the uncertainty principles. Historians of science who wish to ponder the philosophical implications of these developments may also find this a useful volume.

Quantum Fluctuations of Spacetime

Author : Lawrence B. Crowell
Publisher : World Scientific
Page : 388 pages
File Size : 43,9 Mb
Release : 2005
Category : Science
ISBN : 9789812565150

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Quantum Fluctuations of Spacetime by Lawrence B. Crowell Pdf

Three key aspects of quantum gravity are considered in this book: phenomenology, potential experimental aspects and foundational theory. The phenomenology is the treatment of metric quantum fluctuations as torsional curves that deviate from classical expectations. This leads to possible experimental configurations that may detect such fluctuations. Most of these proposed experiments are quantum optical measurements of subtle quantum gravity effects in the interaction of photons and atoms. The foundational discussions attempt to find an substratum to string theories, which are motivated by the phenomenological treatment. Quantum gravity is not the quantization of general relativity, but is instead the embedding of quantum theory and gravitation into a more fundamental field theoretic framework.

Quantum Fluctuations

Author : Edward Nelson
Publisher : Princeton University Press
Page : 158 pages
File Size : 48,8 Mb
Release : 2020-09-01
Category : Science
ISBN : 9780691218021

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Quantum Fluctuations by Edward Nelson Pdf

Stochastic mechanics is a description of quantum phenomena in classical probabilistic terms. This work contains a detailed account of the kinematics of diffusion processes, including diffusions on curved manifolds which are necessary for the treatment of spin in stochastic mechanics. The dynamical equations of the theory are derived from a variational principle, and interference, the asymptotics of free motion, bound states, statistics, and spin are described in classical terms. In addition to developing the formal mathematical aspects of the theory, the book contains discussion of possible physical causes of quantum fluctuations in terms of an interaction with a background field. The author gives a critical analysis of stochastic mechanics as a candidate for a realistic theory of physical processes, discussing measurement, local causality in the sense of Bell, and the failure of the theory in its present form to satisfy locality.

Photons and Quantum Fluctuations

Author : E. R. Pike,H. Walther
Publisher : CRC Press
Page : 244 pages
File Size : 52,7 Mb
Release : 2020-08-26
Category : Science
ISBN : 9781000157024

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Photons and Quantum Fluctuations by E. R. Pike,H. Walther Pdf

Based on a special ONR seminar, Photons and Quantum Fluctuations draws together discoveries in nonclassical or "silent" light for research workers and postgraduates in quantum optics. With nonclassical light, noise is reduced in amplitude below that expected by previous applications of the uncertainty principles. Historians of science who wish to ponder the philosophical implications of these developments may also find this a useful volume.

An Introduction to Quantum Optics and Quantum Fluctuations

Author : Peter W. Milonni
Publisher : Oxford University Press
Page : 543 pages
File Size : 54,6 Mb
Release : 2019-01-31
Category : Science
ISBN : 9780192566119

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An Introduction to Quantum Optics and Quantum Fluctuations by Peter W. Milonni Pdf

This is an introduction to the quantum theory of light and its broad implications and applications. A significant part of the book covers material with direct relevance to current basic and applied research, such as quantum fluctuations and their role in laser physics and the theory of forces between macroscopic bodies (Casimir effects). The book includes numerous historical sidelights throughout, and approximately seventy exercises. The book provides detailed expositions of the theory with emphasis on general physical principles. Foundational topics in classical and quantum electrodynamics are addressed in the first half of the book, including the semiclassical theory of atom-field interactions, the quantization of the electromagnetic field in dispersive and dissipative media, uncertainty relations, and spontaneous emission. The second half begins with a chapter on the Jaynes-Cummings model, dressed states, and some distinctly quantum-mechanical features of atom-field interactions, and includes discussion of entanglement, the no-cloning theorem, von Neumann's proof concerning hidden variable theories, Bell's theorem, and tests of Bell inequalities. The last two chapters focus on quantum fluctuations and fluctuation-dissipation relations, beginning with Brownian motion, the Fokker-Planck equation, and classical and quantum Langevin equations. Detailed calculations are presented for the laser linewidth, spontaneous emission noise, photon statistics of linear amplifiers and attenuators, and other phenomena. Van der Waals interactions, Casimir forces, the Lifshitz theory of molecular forces between macroscopic media, and the many-body theory of such forces based on dyadic Green functions are analyzed from the perspective of Langevin noise, vacuum field fluctuations, and zero-point energy.

Optomechanics with Quantum Vacuum Fluctuations

Author : Zhujing Xu
Publisher : Springer Nature
Page : 120 pages
File Size : 49,9 Mb
Release : 2023-11-18
Category : Science
ISBN : 9783031430527

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Optomechanics with Quantum Vacuum Fluctuations by Zhujing Xu Pdf

This thesis presents the first realization of non-reciprocal energy transfer between two cantilevers by quantum vacuum fluctuations. According to quantum mechanics, vacuum is not empty but full of fluctuations due to zero-point energy. Such quantum vacuum fluctuations can lead to an attractive force between two neutral plates in vacuum – the so-called Casimir effect – which has attracted great attention as macroscopic evidence of quantum electromagnetic fluctuations, and can dominate the interaction between neutral surfaces at small separations. The first experimental demonstration of diode-like energy transport in vacuum reported in this thesis is a breakthrough in Casimir-based devices. It represents an efficient and robust way of regulating phonon transport along one preferable direction in vacuum. In addition, the three-body Casimir effects investigated in this thesis were used to realize a transistor-like three-terminal device with quantum vacuum fluctuations. These two breakthroughs pave the way for exploring and developing advanced Casimir-based devices with potential applications in quantum information science. This thesis also includes a study of the non-contact Casimir friction, which will enrich the understanding of quantum vacuum fluctuations.

An Introduction to Quantum Optics and Quantum Fluctuations

Author : Peter W. Milonni
Publisher : Oxford University Press
Page : 543 pages
File Size : 44,6 Mb
Release : 2019
Category : Science
ISBN : 9780199215614

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An Introduction to Quantum Optics and Quantum Fluctuations by Peter W. Milonni Pdf

This is an introduction to the quantum theory of light and its broad implications and applications. A significant part of the book covers material with direct relevance to current basic and applied research, such as quantum fluctuations and their role in laser physics and the theory of forces between macroscopic bodies (Casimir effects). The book includes numerous historical sidelights throughout, and approximately seventy exercises. The book provides detailed expositions of the theory with emphasis on general physical principles. Foundational topics in classical and quantum electrodynamics are addressed in the first half of the book, including the semiclassical theory of atom-field interactions, the quantization of the electromagnetic field in dispersive and dissipative media, uncertainty relations, and spontaneous emission. The second half begins with a chapter on the Jaynes-Cummings model, dressed states, and some distinctly quantum-mechanical features of atom-field interactions, and includes discussion of entanglement, the no-cloning theorem, von Neumann's proof concerning hidden variable theories, Bell's theorem, and tests of Bell inequalities. The last two chapters focus on quantum fluctuations and fluctuation-dissipation relations, beginning with Brownian motion, the Fokker-Planck equation, and classical and quantum Langevin equations. Detailed calculations are presented for the laser linewidth, spontaneous emission noise, photon statistics of linear amplifiers and attenuators, and other phenomena. Van der Waals interactions, Casimir forces, the Lifshitz theory of molecular forces between macroscopic media, and the many-body theory of such forces based on dyadic Green functions are analyzed from the perspective of Langevin noise, vacuum field fluctuations, and zero-point energy.

Spatio-Temporal Chaos and Vacuum Fluctuations of Quantized Fields

Author : Christian Beck
Publisher : World Scientific
Page : 292 pages
File Size : 47,7 Mb
Release : 2002-04-29
Category : Science
ISBN : 9789814489683

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Spatio-Temporal Chaos and Vacuum Fluctuations of Quantized Fields by Christian Beck Pdf

This book describes new applications for spatio-temporal chaotic dynamical systems in elementary particle physics and quantum field theories. The stochastic quantization approach of Parisi and Wu is extended to more general deterministic chaotic processes as generated by coupled map lattices. In particular, so-called chaotic strings are introduced as a suitable small-scale dynamics of vacuum fluctuations. This more general approach to second quantization reduces to the ordinary stochastic quantization scheme on large scales, but it also opens up interesting new perspectives: chaotic strings appear to minimize their vacuum energy for the observed numerical values of the free standard model parameters. Contents:Chaotic Quantization of Field TheoriesChaotic StringsVacuum Energy of Chaotic StringsPhase Transitions and Spontaneous Symmetry BreakingStochastic Interpretation of the Uncertainty RelationGeneralized Statistical Mechanics ApproachInteraction Energy of Chaotic StringsSelf Energy of Chaotic StringsTotal Vacuum Energy of Chaotic StringsGrand Unification11-Dimensional Space-Time and Quantum GravitySummary Readership: Graduate students, researchers and academics involved in dynamical systems, statistical physics and high energy physics. Keywords:

Quantum Fluctuations of Spacetime

Author : Anonim
Publisher : Unknown
Page : 128 pages
File Size : 42,7 Mb
Release : 2024-06-14
Category : Electronic
ISBN : 9789814479257

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Quantum Fluctuations of Spacetime by Anonim Pdf

What Caused the Big Bang?

Author : Rem Blanchard Edwards
Publisher : Rodopi
Page : 446 pages
File Size : 43,7 Mb
Release : 2001
Category : Philosophy
ISBN : 9042014075

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What Caused the Big Bang? by Rem Blanchard Edwards Pdf

This book critically explores answers to the big question, What produced our universe around fifteen billion years ago in a Big Bang? It critiques contemporary atheistic cosmologies, incl. Steady State, Oscillationism, Big Fizz, that affirm the eternity & self-sufficiency of the universe without God. It defends and revises Process Theology and arguments for God's existence from the universe's life-supporting order & contingent existence.

Introduction to Modern Quantum Optics

Author : Jin-Sheng Peng,Gao-xiang Li
Publisher : World Scientific
Page : 584 pages
File Size : 40,5 Mb
Release : 1998
Category : Science
ISBN : 9810234481

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Introduction to Modern Quantum Optics by Jin-Sheng Peng,Gao-xiang Li Pdf

This book discusses quantum optics and investigates the quantum properties of interactions between atoms and laser fields. It is divided into three parts. Part I introduces the elementary theory of the interaction between atoms and light. Part II provides a concentrated discussion on the quantum properties of light fields. Part III deals with the quantum dynamic properties of the atoms interacting with laser fields. This book can be used as a text for both graduate and undergraduate students; it will also benefit scientists who are interested in quantum optics and theoretical physics.

Electromagnetic Fluctuations at the Nanoscale

Author : Aleksandr I. Volokitin,Bo N.J. Persson
Publisher : Springer
Page : 425 pages
File Size : 49,6 Mb
Release : 2017-06-09
Category : Technology & Engineering
ISBN : 9783662534748

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Electromagnetic Fluctuations at the Nanoscale by Aleksandr I. Volokitin,Bo N.J. Persson Pdf

This book provides a general formalism for the calculation of the spectral correlation function for the fluctuating electromagnetic field. The procedure is applied to the radiative heat transfer and the van der Waals friction using both the semi-classical theory of the fluctuating electromagnetic field and quantum field theory. Applications of the radiative heat transfer and non-contact friction to scanning probe spectroscopy are presented. The theory gives a tentative explanation for the experimental non-contact friction data. The book explains that radiative heat transfer and the van der Waals friction are largely enhanced at short separations between the bodies due to the evanescent electromagnetic waves. Particular strong enhancement occurs if the surfaces of the bodies can support localized surface modes like surface plasmons, surface polaritons or adsorbate vibrational modes. An electromagnetic field outside a moving body can also be created by static charges which are always present on the surface of the body due to inhomogeneities, or due to a bias voltage. This electromagnetic field produces electrostatic friction which can be significantly enhanced if on the surface of the body there is a 2D electron or hole system or an incommensurate adsorbed layer of ions exhibiting acoustic vibrations.

Dissipative Quantum Mechanics of Nanostructures

Author : Andrei D. Zaikin,Dmitry Golubev
Publisher : CRC Press
Page : 393 pages
File Size : 40,6 Mb
Release : 2019-05-24
Category : Science
ISBN : 9781000024203

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Dissipative Quantum Mechanics of Nanostructures by Andrei D. Zaikin,Dmitry Golubev Pdf

Continuing miniaturization of electronic devices, together with the quickly growing number of nanotechnological applications, demands a profound understanding of the underlying physics. Most of the fundamental problems of modern condensed matter physics involve various aspects of quantum transport and fluctuation phenomena at the nanoscale. In nanostructures, electrons are usually confined to a limited volume and interact with each other and lattice ions, simultaneously suffering multiple scattering events on impurities, barriers, surface imperfections, and other defects. Electron interaction with other degrees of freedom generally yields two major consequences, quantum dissipation and quantum decoherence. In other words, electrons can lose their energy and ability for quantum interference even at very low temperatures. These two different, but related, processes are at the heart of all quantum phenomena discussed in this book. This book presents copious details to facilitate the understanding of the basic physics behind a result and the learning to technically reproduce the result without delving into extra literature. The book subtly balances the description of theoretical methods and techniques and the display of the rich landscape of the physical phenomena that can be accessed by these methods. It is useful for a broad readership ranging from master’s and PhD students to postdocs and senior researchers.