Keywords:
Quantum theory-Mathematics.
;
Electronic books.
Description / Table of Contents:
In this book, the authors demonstrate the huge practical utility of explaining quantum phenomena in many different research fields. Bohmian mechanics, the formulation of the quantum theory pioneered by Louis de Broglie and David Bohm, offers an alternative mathematical formulation of quantum phenomena in terms of quantum trajectories.
Type of Medium:
Online Resource
Pages:
1 online resource (701 pages)
Edition:
2nd ed.
ISBN:
9781000650105
URL:
https://ebookcentral.proquest.com/lib/geomar/detail.action?docID=5779388
DDC:
530.12
Language:
English
Note:
Cover -- Half Title -- Title Page -- Copyright Page -- Table of Contents -- Foreword to the First Edition -- Preface to the Second Edition -- Preface to the First Edition -- Introduction -- 1: Overview of Bohmian Mechanics -- 1.1 Historical Development of Bohmian Mechanics -- 1.1.1 Particles and Waves -- 1.1.2 Origins of the Quantum Theory -- 1.1.3 "Wave or Particle?" vs. "Wave and Particle" -- 1.1.4 Louis de Broglie and the Fifth Solvay Conference -- 1.1.5 Albert Einstein and Locality -- 1.1.6 David Bohm and Why the "Impossibility Proofs" were Wrong? -- 1.1.7 John Bell and Nonlocality -- 1.1.8 Quantum Hydrodynamics -- 1.1.9 Is Bohmian Mechanics a Useful Theory? -- 1.2 Bohmian Mechanics for a Single Particle -- 1.2.1 Preliminary Discussions -- 1.2.2 Creating a Wave Equation for Classical Mechanics -- 1.2.2.1 Newton's second law -- 1.2.2.2 Hamilton's principle -- 1.2.2.3 Lagrange's equation -- 1.2.2.4 Equation for an (infinite) ensemble of trajectories -- 1.2.2.5 Classical Hamilton-Jacobi equation -- 1.2.2.6 Local continuity equation for an (infinite) ensemble of classical particles -- 1.2.2.7 Classical wave equation -- 1.2.3 Trajectories for Quantum Systems -- 1.2.3.1 Schrödinger equation -- 1.2.3.2 Local conservation law for an (infinite) ensemble of quantum trajectories -- 1.2.3.3 Velocity of Bohmian particles -- 1.2.3.4 Quantum Hamilton-Jacobi equation -- 1.2.3.5 A quantum Newton-like equation -- 1.2.4 Similarities and Differences between Classical and Quantum Mechanics -- 1.2.5 Feynman Paths -- 1.2.6 Basic Postulates for a Single-Particle -- 1.3 Bohmian Mechanics for Many-Particle Systems -- 1.3.1 Preliminary Discussions: The Many Body Problem -- 1.3.2 Many-Particle Quantum Trajectories -- 1.3.2.1 Many-particle continuity equation -- 1.3.2.2 Many-particle quantum Hamilton-Jacobi equation.
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1.3.3 Factorizability, Entanglement, and Correlations -- 1.3.4 Spin and Identical Particles -- 1.3.4.1 Single-particle with s = 1/2 -- 1.3.4.2 Many-particle system with s = 1/2 particles -- 1.3.5 Basic Postulates for Many-Particle Systems -- 1.3.6 The Conditional Wave Function: Many-Particle Bohmian Trajectories without the Many-Particle Wave Function -- 1.3.6.1 Single-particle pseudo-Schrödinger equation for many-particle systems -- 1.3.6.2 Example: Application in factorizable many-particle systems -- 1.3.6.3 Example: Application in interacting many-particle systems without exchange interaction -- 1.3.6.4 Example: Application in interacting many-particle systems with exchange interaction -- 1.4 Bohmian Explanation of the Measurement Process -- 1.4.1 The Measurement Problem -- 1.4.1.1 The orthodox measurement process -- 1.4.1.2 The Bohmian measurement process -- 1.4.2 Theory of the Bohmian Measurement Process -- 1.4.2.1 Example: Bohmian measurement of the momentum -- 1.4.2.2 Example: Sequential Bohmian measurement of the transmitted and reflected particles -- 1.4.3 The Evaluation of a Mean Value in Terms of Hermitian Operators -- 1.4.3.1 Why Hermitian operators in Bohmian mechanics? -- 1.4.3.2 Mean value from the list of outcomes and their probabilities -- 1.4.3.3 Mean value from the wave function and the operators -- 1.4.3.4 Mean value from Bohmian mechanics in the position representation -- 1.4.3.5 Mean value from Bohmian trajectories -- 1.4.3.6 On the meaning of local Bohmian operators AB(x) -- 1.5 Concluding Remarks -- 1.6 Problems and Solutions -- A.1 Appendix: Numerical Algorithms for the Computation of Bohmian Mechanics -- A.1.1 Analytical Computation of Bohmian Trajectories -- A.1.1.1 Time-dependent Schrödinger equation for a 1D space (TDSE1D-BT) with an explicit method.
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A.1.1.2 Time-independent Schrödinger equation for a 1D space (TISE1D) with an implicit (matrix inversion) method -- A.1.1.3 Time-independent Schrödinger equation for a 1D space (TISE1D) with an explicit method -- A.1.2 Synthetic Computation of Bohmian Trajectories -- A.1.2.1 Time-dependent quantum Hamilton-Jacobi equations (TDQHJE1D) with an implicit (Newton-like fixed Eulerian mesh) method -- A.1.2.2 Time-dependent quantum Hamilton-Jacobi equations (TDQHJE1D) with an explicit (Lagrangian mesh) method -- A.1.3 More Elaborated Algorithms -- 2: Hydrogen Photoionization with Strong Lasers -- 2.1 Introduction -- 2.1.1 A Brief Overview of Photoionization -- 2.1.2 The Computational Problem of Photoionization -- 2.1.3 Photoionization with Bohmian Trajectories -- 2.2 One-Dimensional Photoionization of Hydrogen -- 2.2.1 The Physical Model -- 2.2.2 Harmonic Generation -- 2.2.3 Above Threshold Ionization -- 2.3 Hydrogen Photoionization with Beams Carrying Orbital Angular Momentum -- 2.3.1 Physical System -- 2.3.2 Bohmian Equations in an Electromagnetic Field -- 2.3.3 Selection Rules -- 2.3.4 Numerical Simulations -- 2.3.4.1 Gaussian pulses -- 2.3.4.2 Laguerre-Gaussian pulses -- 2.4 Conclusions -- 3: Atomtronics: Coherent Control of Atomic Flow via Adiabatic Passage -- 3.1 Introduction -- 3.1.1 Atomtronics -- 3.1.2 Three-Level Atom Optics -- 3.1.3 Adiabatic Transport with Trajectories -- 3.2 Physical System: Neutral Atoms in Optical Microtraps -- 3.2.1 One-Dimensional Hamiltonian -- 3.3 Adiabatic Transport of a Single Atom -- 3.3.1 The Matter Wave STIRAP Paradox with Bohmian Trajectories -- 3.3.2 Velocities and Accelerations of Bohmian Trajectories -- 3.4 Adiabatic Transport of a Single Hole -- 3.4.1 Hole Transfer as an Array-Cleaning Technique -- 3.4.2 Adiabatic Transport of a Hole in an Array of Three Traps -- 3.4.2.1 Three-level approximation description.
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3.4.2.2 Numerical simulations -- 3.4.3 Hole Transport Fidelity -- 3.4.4 Bohmian Trajectories for the Hole Transport -- 3.4.5 Atomtronics with Holes -- 3.4.5.1 Single-hole diode -- 3.4.5.2 Single-hole transistor -- 3.5 Adiabatic Transport of a Bose-Einstein Condensate -- 3.5.1 Madelung Hydrodynamic Formulation -- 3.5.2 Numerical Simulations -- 3.6 Conclusions -- 4: Bohmian Pathways into Chemistry: A Brief Overview -- 4.1 Introduction -- 4.2 Approaching Molecular Systems at Different Levels -- 4.2.1 The Born-Oppenheimer Approximation -- 4.2.2 Electronic Configuration -- 4.2.3 Dynamics of "Small" Molecular Systems -- 4.2.4 Statistical Approach to Large (Complex) Molecular Systems -- 4.3 Bohmian Mechanics -- 4.3.1 Fundamentals -- 4.3.2 Nonlocality and Entanglement -- 4.3.3 Weak Values and Equations of Change -- 4.4 Applications -- 4.4.1 Time-Dependent DFT: The Quantum Hydrodynamic Route -- 4.4.2 Bound System Dynamics: Chemical Reactivity -- 4.4.3 Scattering Dynamics: Young's Two-Slit Experiment -- 4.4.4 Effective Dynamical Treatments: Decoherence and Reduced Bohmian Trajectories -- 4.4.5 Pathways to Complex Molecular Systems: Mixed Bohmian-Classical Mechanics -- 4.5 Concluding Remarks -- 5: Adaptive Quantum Monte Carlo Approach States for High-Dimensional Systems -- 5.1 Introduction -- 5.2 Mixture Modeling Approach -- 5.2.1 Motivation for a Trajectory-Based Approach -- 5.2.1.1 Bohmian interpretation -- 5.2.1.2 Quantum hydrodynamic trajectories -- 5.2.1.3 Computational considerations -- 5.2.2 Density Estimation -- 5.2.2.1 The mixture model -- 5.2.2.2 Expectation maximization -- 5.2.3 Computational Results -- 5.2.3.1 Bivariate distribution with multiple nonseparable Gaussian components -- 5.2.4 The Ground State of Methyl Iodide -- 5.3 Quantum Effects in Atomic Clusters at Finite Temperature -- 5.4 Quantum Structures at Zero and Finite Temperature.
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5.4.1 Zero Temperature Theory -- 5.4.2 Finite Temperature Theory -- 5.4.2.1 Computational approach: The mixture model -- 5.4.2.2 Computational approach: Equations of motion for the sample points -- 5.4.3 Computational Studies -- 5.4.3.1 Zero temperature results -- 5.4.3.2 Finite temperature results -- 5.5 Overcoming the Node Problem -- 5.5.1 Supersymmetric Quantum Mechanics -- 5.5.2 Implementation of SUSY QM in an Adaptive Monte Carlo Scheme -- 5.5.3 Test Case: Tunneling in a Double-Well Potential -- 5.5.4 Extension to Higher Dimensions -- 5.5.4.1 Discussion -- 5.6 Summary -- 6: Nanoelectronics: Quantum Electron Transport -- 6.1 Introduction: From Electronics to Nanoelectronics -- 6.2 Evaluation of the Electrical Current and Its Fluctuations -- 6.2.1 Bohmian Measurement of the Current as a Function of the Particle Positions -- 6.2.1.1 Relationship between current in the ammeter Iammeter, g(t) and the current in the device-active region Ig(t) -- 6.2.1.2 Relationship between the current on the device-active region Ig(t) and the Bohmian trajectories {r1,g[t], . . . , rMP,g[t]} -- 6.2.1.3 Reducing the number of degrees of freedom of the whole circuit -- 6.2.2 Practical Computation of DC, AC, and Transient Currents -- 6.2.3 Practical Computation of Current Fluctuations and Higher Moments -- 6.2.3.1 Thermal and shot noise -- 6.2.3.2 Practical computation of current fluctuations -- 6.3 Solving Many-Particle Systems with Bohmian Trajectories -- 6.3.1 Coulomb Interaction Among Electrons -- 6.3.2 Exchange and Coulomb Interaction Among Electrons -- 6.3.2.1 Algorithm for spinless electrons -- 6.3.2.2 Algorithm for electrons with spins in arbitrary directions -- 6.4 Dissipation with Bohmian Mechanics -- 6.4.1 Parabolic Band Structures: Pseudo Schrödinger Equation -- 6.4.2 Linear Band Structures: Pseudo Dirac Equation -- 6.5 The BITLLES Simulator.
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6.5.1 Overall Charge Neutrality and Current Conservation.
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