Casimir-Polder Force Between Atom and Surface PDF Download

Author: Riccardo Messina
Publisher:
ISBN:
Category :
Languages : en
Pages : 147

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Book Description
Dans cette thèse, l'on discute des aspects de l'interaction de Casimir-Polder entre atome et surface. D'abord, on analyse la force latérale sur un atome en présence d'une corrugation sur la surface, en utilisant une méthode fondée sur la matrice de scattering, développée au premier ordre par rapport à l'amplitude de corrugation. On calcule numériquement le potentiel d'interaction au premier ordre pour une distance atome-surface et un profil de corrugation arbitraires: on discute l'effet de la géometrie du système et de la conductivité finie de la surface. Nous étudions les déviations du résultat exact de la Proximity Force Approximation et de la Pairwise Summation. La deuxième partie de la thèse est consacrée aux propriétés dynamiques. On analyse l'émission de radiation par un atome en mouvement au-dessus d'une surface corruguée. On déduit des propriétés générales de l'émission de photons par un objet en mouvement au dessus d'une surface corruguée, et on discute ensuite le cas d'un atome, en commentant l'observabilité de l'effet. Nous étudions ensuite l'évolution temporelle de la densité d'énergie électromagnétique pour un atome devant un plan parfaitement conducteur pendant l'évolution du système supposant qu'il soit décrit au début par un état non stationnaire. La méthode utilisée est la solution itérative des équations d'Heisenberg des opérateurs de champ. Nous discutons la causalité relativiste dans la propagation des champs, et analysons aussi l'interaction atome-atome devant une surface. Enfin, nous montrons des résultats concernant l'évolution de la force atome-miroir à partir d'un état partiellement habillé, en discutant aussi sa réalisabilité expérimentale.

Author: Diego Dalvit
Publisher: Springer
ISBN: 3642202888
Category : Science
Languages : en
Pages : 465

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Book Description
Casimir effects serve as primary examples of directly observable manifestations of the nontrivial properties of quantum fields, and as such are attracting increasing interest from quantum field theorists, particle physicists, and cosmologists. Furthermore, though very weak except at short distances, Casimir forces are universal in the sense that all material objects are subject to them. They are thus also an increasingly important part of the physics of atom-surface interactions, while in nanotechnology they are being investigated not only as contributors to ‘stiction’ but also as potential mechanisms for actuating micro-electromechanical devices. While the field of Casimir physics is expanding rapidly, it has reached a level of maturity in some important respects: on the experimental side, where most sources of imprecision in force measurements have been identified as well as on the theoretical side, where, for example, semi-analytical and numerical methods for the computation of Casimir forces between bodies of arbitrary shape have been successfully developed. This book is, then, a timely and comprehensive guide to the essence of Casimir (and Casimir-Polder) physics that will have lasting value, serving the dual purpose of an introduction and reference to the field. While this volume is not intended to be a unified textbook, but rather a collection of largely independent chapters written by prominent experts in the field, the detailed and carefully written articles adopt a style that should appeal to non-specialist researchers in the field as well as to a broader audience of graduate students.

Author: K. A. Milton
Publisher: World Scientific
ISBN: 9810243979
Category : Science
Languages : en
Pages : 320

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Book Description
The Casimir effect is a quantum force of attraction between two parallel uncharged conducting plates. More generally, it refers to the interaction between material bodies due to quantum fluctuations in whatever fields are relevant.

Author: Ulf Leonhardt
Publisher: World Scientific Publishing Company
ISBN: 9814644773
Category : Science
Languages : en
Pages : 275

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Book Description
Forces of the Quantum Vacuum presents a number of theoretical approaches to Casimir, van der Waals and Casimir-Polder forces that have been fruitfully employed in mainstream research, and also reviews the experimental evidence for Casimir forces. Beginning with basic ideas in quantum mechanics and building its way to a sophisticated form of macroscopic QED, the book provides an inspiring training manual for graduate students to develop in a natural progression the ideas needed for modern theoretical research on Casimir forces.

Author: Stefan Yoshi Buhmann
Publisher: Springer
ISBN: 3642324843
Category : Technology & Engineering
Languages : en
Pages : 346

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Book Description
Dispersion forces acting on both atoms and bodies play a key role in modern nanotechnology. As demonstrated in this book, macroscopic quantum electrodynamics provides a powerful method for understanding and quantifying dispersion forces in a vast range of realistic scenarios. The basic physical concepts and theoretical steps allow for the derivation of outlined general expressions for dispersion forces. As illustrated by a number of examples, these expressions can easily be used to study forces between objects of various shapes and materials, including effects like material absorption, nontrivial magnetic properties and dynamical forces asssociated with excited systems.

Author: Massimo Inguscio
Publisher: Oxford University Press, USA
ISBN: 0198525842
Category : Science
Languages : en
Pages : 349

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Book Description
This book traces the evolution of Atomic Physics from precision spectroscopy to the manipulation of atoms at a billionth of a degree above absolute zero. Quantum worlds can be simulated and fundamental theories, such as General Relativity and Quantum Electrodynamics, can be tested with table-top experiments.

Author: William M.R. Simpson
Publisher: Springer
ISBN: 3319093150
Category : Science
Languages : en
Pages : 192

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Book Description
Despite more than half a century of theoretical work, the Casimir effect is still not as fully understood as some suppose. In this treatise, the author uncovers new puzzles and paradoxes concerning this mysterious phenomenon. In particular, he clearly demonstrates that the most sophisticated theories fail when confronted with dielectrics in which the refractive index is not uniform but gradually changes.

Author: Mohsen Razavy
Publisher: World Scientific
ISBN: 9813207930
Category : Science
Languages : en
Pages : 593

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Book Description
Dissipative forces play an important role in problems of classical as well as quantum mechanics. Since these forces are not among the basic forces of nature, it is essential to consider whether they should be treated as phenomenological interactions used in the equations of motion, or they should be derived from other conservative forces. In this book we discuss both approaches in detail starting with the Stoke's law of motion in a viscous fluid and ending with a rather detailed review of the recent attempts to understand the nature of the drag forces originating from the motion of a plane or a sphere in vacuum caused by the variations in the zero-point energy. In the classical formulation, mathematical techniques for construction of Lagrangian and Hamiltonian for the variational formulation of non-conservative systems are discussed at length. Various physical systems of interest including the problem of radiating electron, theory of natural line width, spin-boson problem, scattering and trapping of heavy ions and optical potential models of nuclear reactions are considered and solved.

Author: Kimball A. Milton
Publisher: World Scientific
ISBN: 981428985X
Category : Science
Languages : en
Pages : 563

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Book Description
QFEXT is the leading international conference held every two years, highlighting progress in quantum vacuum energy phenomena, the Casimir effect, and related topics, both experimentally and theoretically. Most of the key players in the field are expected to be present. Thus the proceedings will be the definitive source of information on this field, which is playing an increasingly important role in nanotechnology and in understanding fundamental issues in physics such as renormalization and in the search for new physics such as fifth forces and dark energy. Proceedings of previous conferences in this series have been important, and like the conferences they summarize, have led to major progress in the two subsequent years. This is because, the fundamental aspects of quantum field theory; applications of all branches of physics, chemistry, nanoscience, and astrophysics; mathematical and experimental techniques described have wide applications and all leading groups and scientists working in this field will be represented.

Author: Chandana Sinha
Publisher: World Scientific
ISBN: 9812772510
Category : Science
Languages : en
Pages : 288

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Book Description
The breadth, scope and volume of research in atomic, molecular and optical (AMO) physics have increased enormously in the last few years. Following the widespread use of pulsed lasers, certain newly emerging areas as well as selected mature subfields are ushering in a second renaissance. This volume focuses on current research in these crucial areas: cold atoms and BoseOCoEinstein condensates, quantum information and quantum computation, and new techniques for investigating collisions and structure. The topics covered include: the multireference coupled cluster method in quantum chemistry and the role of electronic correlation in nanosystems; laser cooling of atoms and theories of the BoseOCoEinstein condensate; and quantum computing and quantum information transfer using cold atoms and shaped ultrafast pulses. Other articles deal with recent findings in heavy ion collisions with clusters, time-of-flight spectroscopy techniques, and a specific example of a chaotic quantum system. The contributions will greatly assist in the sharing of specialized knowledge among experts and will also be useful for postgraduate students striving to obtain an overall picture of the current research status in the areas covered. Sample Chapter(s). Chapter 1: Ultrafast Dynamics of Nano and Mesoscopic Systems Driven by Asymmetric Electromagnetic Pulses (1,314 KB). Contents: Ultrafast Dynamics of Nano and Mesoscopic Systems Driven by Asymmetric Electromagnetic Pulses (A Matos-Abiague et al.); Experimenting with Topological States of BoseOCoEinstein Condensates (C Raman); PairOCoCorrelation in BoseOCoEinstein Condensate and Fermi Superfluid of Atomic Gases (B Deb); A FeynmanOCoKac Path Integral Study of Rb Gas (S Dutta); Quantum Information Transfer in AtomOCoPhoton Interactions in a Cavity (A S Majumder et al.); MRCPA: Theory and Application to Highly Correlating System (K Tanaka); Estimation of Ion Kinetic Energies from Time-of-Flight and Momentum Spectra (B Bapat); Study of AtomOCoSurface Interaction Using Magnetic Atom Mirror (A K Mohapatra); and other papers. Readership: Academics, researchers and research students in physics."