A Quantum Measurement Approach To Tunnelling

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A Quantum Measurement Approach To Tunnelling

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Author : D. K. Roy
language : en
Publisher: World Scientific
Release Date : 1993

A Quantum Measurement Approach To Tunnelling written by D. K. Roy and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Science categories.

This book presents a new approach to analyze quantum mechanical tunnelling of particles across potential barriers. The conventional concepts of this phenomenon, which are based on a time-in-dependent or a time-dependent perturbation approach are inadequate in furnishing explanations to a number of effects, e.g. (i) the limit of resolution of a field emission macroscope (FEM), (ii) Esaki integral, representing the I-V characteristics of solid-state junctions, (iii) Josephson effect, (iv) tunnelling time, (v) tunnelling current density etc. The new analysis presented here not only provides adequate explanations to all the above mentioned effects but also furnishes an appropriate expression for the tunnelling current density which yields results closer to experimentally observed values.

Quantum Measurement Approach To Tunnelling A Tunnelling By Quantum Measurement

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Author : Dilip Kumar Roy
language : en
Publisher: World Scientific
Release Date : 1993-06-17

Quantum Measurement Approach To Tunnelling A Tunnelling By Quantum Measurement written by Dilip Kumar Roy and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993-06-17 with Science categories.

This book presents a new approach to analyze quantum mechanical tunnelling of particles across potential barriers. The conventional concepts of this phenomenon, which are based on a time-in-dependent or a time-dependent perturbation approach are inadequate in furnishing explanations to a number of effects, e.g. (i) the limit of resolution of a field emission macroscope (FEM), (ii) Esaki integral, representing the I-V characteristics of solid-state junctions, (iii) Josephson effect, (iv) tunnelling time, (v) tunnelling current density etc. The new analysis presented here not only provides adequate explanations to all the above mentioned effects but also furnishes an appropriate expression for the tunnelling current density which yields results closer to experimentally observed values.

Quantum Measurement Approach To Tunnelling

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Author : D.K. Roy
language : it
Publisher:
Release Date : 1993

Quantum Measurement Approach To Tunnelling written by D.K. Roy and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with categories.

Quantum Theory Of Tunneling 2nd Edition

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Author : Mohsen Razavy
language : en
Publisher: World Scientific
Release Date : 2013-12-17

Quantum Theory Of Tunneling 2nd Edition written by Mohsen Razavy and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-12-17 with Science categories.

In this revised and expanded edition, in addition to a comprehensible introduction to the theoretical foundations of quantum tunneling based on different methods of formulating and solving tunneling problems, different semiclassical approximations for multidimensional systems are presented. Particular attention is given to the tunneling of composite systems, with examples taken from molecular tunneling and also from nuclear reactions. The interesting and puzzling features of tunneling times are given extensive coverage, and the possibility of measurement of these times with quantum clocks are critically examined.In addition, by considering the analogy between evanescent waves in waveguides and in quantum tunneling, the times related to electromagnetic wave propagation have been used to explain certain aspects of quantum tunneling times. These topics are treated in both non-relativistic as well as relativistic regimes. Finally, a large number of examples of tunneling in atomic, molecular, condensed matter and nuclear physics are presented and solved.

Quantum Mechanical Tunnelling And Its Applications

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Author : Dilip Kumar Roy
language : en
Publisher: World Scientific
Release Date : 1986-12-01

Quantum Mechanical Tunnelling And Its Applications written by Dilip Kumar Roy and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986-12-01 with Science categories.

This book presents a new approach to quantum mechanical tunnelling and its applications to various fields of physics. The conventional concepts of this phenomenon, which are based on a time-dependent or time-independent approach, are inadequate in providing explanations for 1) the limit of resolution of field-emission microscope, 2) the Esaki-Integral representation the tunnelling I-V characteristics of tunnel diodes, 3) the Josephson effect, 4) the tunnelling time, etc. The new theory presented here not only provides adequate explanation for all the above-mentioned effects but also gives an accurate expression for tunnelling current density which predicts results closer to the experimentally observed values. The new presentation also provides a more comprehensive description of the results obtained using older treatment.

Tunneling And Its Implications Proceedings Of The Adriatico Research Conference

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Author : D Mugnai
language : en
Publisher: World Scientific
Release Date : 1997-04-19

Tunneling And Its Implications Proceedings Of The Adriatico Research Conference written by D Mugnai and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997-04-19 with categories.

The motion of a particle undergoing quantum tunneling has long been an open and debated problem in several aspects. One of the most discussed is the determination of the time spent in such processes, but many other features deserve consideration. In this volume, both theoretical and experimental aspects, such as quantum measurement, optical analogy, experimental tests, solid state devices and time scale for anomalies (quantum Zeno effect and superluminal evanescence), are explored.

Quantum Tunnelling In Condensed Media

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Author : Yu. Kagan
language : en
Publisher: Elsevier
Release Date : 2012-12-02

Quantum Tunnelling In Condensed Media written by Yu. Kagan and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-02 with Science categories.

The essays in this book deal with of the problem of quantum tunnelling and related behavior of a microscopic or macroscopic system, which interacts strongly with an "environment" - this being some form of condensed matter. The "system" in question need not be physically distinct from its environment, but could, for example, be one particular degree of freedom on which attention is focussed, as in the case of the Josephson junction studied in several of the papers. This general problem has been studied in many hundreds, if not thousands, of articles in the literature, in contexts as diverse as biophysics and quantum cosmology. The editors have grouped together papers which are representative of the main trends in this area in the last fifteen years or so and sufficiently related in general spirit and terminology that common themes can be discerned. The contributions are primarily theoretical, but the comparison with experiment is discussed wherever possible.

Quantum Theory Of Tunneling

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Author : Mohsen Razavy
language : en
Publisher: World Scientific Publishing Company Incorporated
Release Date : 2003

Quantum Theory Of Tunneling written by Mohsen Razavy and has been published by World Scientific Publishing Company Incorporated this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Science categories.

This book provides a comprehensive introduction to the theoretical foundations of quantum tunneling, stressing the basic physics underlying the applications. The topics addressed include exponential and nonexponential decay processes and the application of scattering theory to tunneling problems. In addition to the Schrödinger equation approach, the path integral, Heisenberg's equations and the phase space method are all used to study the motion of a particle under the barrier. Extensions to the multidimensional cases and tunneling of particles with internal degrees of freedom are also considered. Furthermore, recent advances concerning time delay and tunneling times and some of the problems associated with their measurement are also discussed. Finally, some examples of tunneling in atomic, molecular, nuclear and condensed matter physics are presented.

Tunneling And Its Implications

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Author : Daniela Mugnai
language : en
Publisher: World Scientific
Release Date : 1997

Tunneling And Its Implications written by Daniela Mugnai and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Tunneling (Physics) categories.

"The motion of a particle undergoing quantum tunneling has long been an open and debated problem in several aspects. One of the most discussed is the determination of the time spent in such processes, but many other features deserve consideration. In this volume, both theoretical and experimental aspects, such as quantum measurement, optical analogy, experimental tests, solid state devices and time scale for anomalies (quantum Zeno effect and superluminal evanescence), are explored."--Publisher's website

Quantum Tunneling In Complex Systems

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Author : Joachim Ankerhold
language : en
Publisher: Springer Science & Business Media
Release Date : 2007-02-15

Quantum Tunneling In Complex Systems written by Joachim Ankerhold 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 2007-02-15 with Science categories.

In the last two decades remarkable progress has been made in understanding and describing tunneling processes in complex systems in terms of classical trajectories. This book introduces recent concepts and achievements with particular emphasis on a dynamical formulation and relations to specific systems in mesoscopic, molecular, and atomic physics. Advanced instanton techniques, e.g. for decay rates and tunnel splittings, are discussed in the first part. The second part covers current developments for wave-packet tunneling in real-time, and the third part describes thermodynamics and dynamical approaches for barrier transmission in statistical, particularly dissipative systems.