Acknowledgments |
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xiii | |
Introduction: Historical Background and Recent Developments that Motivate this Book |
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xv | |
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1 The Langevin Equation and Stochastic Processes |
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1 | (28) |
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1 | (4) |
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1.2 The Ornstein-Uhlenbeck (OU) Process |
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5 | (3) |
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8 | (3) |
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1.4 The Overdamped Harmonic Oscillator: An Ornstein--Uhlenbeck process |
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11 | (1) |
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1.5 Differential Form and Discretization |
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12 | (7) |
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1.5.1 Euler-Maruyama Discretization (EMD) and Ito Processes |
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15 | (2) |
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1.5.2 Stratonovich Discretization (SD) |
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17 | (2) |
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1.6 Relation Between Ito and Stratonovich Integrals |
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19 | (2) |
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1.7 Space Varying Diffusion Constant |
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21 | (2) |
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23 | (1) |
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23 | (2) |
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25 | (1) |
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1.11 The Many Particle Case |
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26 | (3) |
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26 | (3) |
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2 The Fokker--Planck Equation |
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29 | (12) |
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2.1 The Chapman--Kolmogorov Equation |
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29 | (1) |
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30 | (4) |
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2.2.1 Derivation of the Smoluchowski (Fokker--Planck) Equation using the Chapman--Kolmogorov Equation |
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30 | (3) |
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2.2.2 Alternative Derivation of the Smoluchowski (Fokker--Planck) Equation |
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33 | (1) |
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2.2.3 The Adjoint (or Reverse or Backward) Fokker--Planck Equation |
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34 | (1) |
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34 | (1) |
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35 | (2) |
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35 | (1) |
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36 | (1) |
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2.5 Averages and Observables |
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37 | (4) |
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39 | (2) |
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3 The Schrodinger Representation |
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41 | (8) |
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3.1 The Schrodinger Equation |
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41 | (2) |
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3.2 Spectral Representation |
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43 | (1) |
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3.3 Ground State and Convergence to the Boltzmann Distribution |
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44 | (5) |
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47 | (2) |
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4 Discrete Systems: The Master Equation and Kinetic Monte Carlo |
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49 | (14) |
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49 | (4) |
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4.1.1 Discrete-Time Markov Chains |
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49 | (2) |
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4.1.2 Continuous-Time Markov Chains, Markov Processes |
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51 | (2) |
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53 | (5) |
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54 | (1) |
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54 | (1) |
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4.2.3 Initial and Final State |
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55 | (1) |
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55 | (1) |
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55 | (3) |
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4.3 Kinetic Monte Carlo (KMC) |
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58 | (5) |
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61 | (2) |
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63 | (6) |
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5.1 The Ito Path Integral |
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63 | (3) |
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5.2 The Stratonovich Path Integral |
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66 | (3) |
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67 | (2) |
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69 | (20) |
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6.1 First Passage Time and Transition Rate |
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69 | (8) |
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6.1.1 Average Mean First Passage Time |
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71 | (2) |
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6.1.2 Distribution of First Passage Time |
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73 | (1) |
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6.1.3 The Free Particle Case |
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74 | (1) |
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75 | (2) |
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6.2 Kramers Transition Time: Average and Distribution |
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77 | (4) |
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78 | (2) |
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6.2.2 Mean First Passage Time Derivation |
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80 | (1) |
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6.3 Transition Path Time: Average and Distribution |
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81 | (8) |
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6.3.1 Transition Path Time Distribution |
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82 | (2) |
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6.3.2 Mean Transition Path Time |
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84 | (2) |
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86 | (3) |
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7 Sampling Transition Paths |
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89 | (28) |
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7.1 Dominant Paths and Instantons |
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92 | (6) |
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7.1.1 Saddle-Point Method |
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92 | (1) |
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7.1.2 The Euler-Lagrange Equation: Dominant Paths |
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92 | (4) |
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7.1.3 Steepest Descent Method |
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96 | (1) |
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7.1.4 Gradient Descent Method |
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97 | (1) |
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98 | (1) |
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98 | (1) |
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99 | (1) |
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7.3 Bridge and Conditioning |
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99 | (18) |
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102 | (1) |
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7.3.2 The Ornstein-Uhlenbeck Bridge |
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102 | (2) |
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7.3.3 Exact Diagonalization |
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104 | (1) |
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105 | (6) |
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111 | (1) |
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Appendix A Gaussian Variables |
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111 | (2) |
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113 | (4) |
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8 The Rate of Conformational Change: Definition and Computation |
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117 | (16) |
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8.1 First-order Chemical Kinetics |
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117 | (2) |
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8.2 Rate Coefficients from Microscopic Dynamics |
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119 | (14) |
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8.2.1 Validity of First Order Kinetics |
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120 | (3) |
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8.2.2 Mapping Continuous Trajectories onto Discrete Kinetics and Computing Exact Rates |
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123 | (3) |
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8.2.3 Computing the Rate More Efficiently |
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126 | (2) |
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8.2.4 Transmission Coefficient and Variational Transition State Theory |
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128 | (1) |
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8.2.5 Harmonic Transition-State Theory |
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129 | (2) |
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131 | (2) |
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9 Zwanzig-Caldeiga-Leggett Model for Low-Dimensional Dynamics |
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133 | (14) |
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9.1 Low-Dimensional Models of Reaction Dynamics From a Microscopic Hamiltonian |
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133 | (4) |
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9.2 Statistical Properties of the Noise and the Fluctuation-dissipation Theorem |
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137 | (605) |
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138 | (1) |
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9.2.2 Single-Trajectory Approach |
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139 | (3) |
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9.3 Time-Reversibility of the Langevin Equation |
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142 | (3) |
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145 | (2) |
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10 Escape from a Potential Well in the Case of Dynamics Obeying the Generalized Langevin Equation: General Solution Based on the Zwanzig-Caldeira-Leggett Hamiltonian |
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147 | (10) |
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10.1 Derivation of the Escape Rate |
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147 | (3) |
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10.2 The Limit of Kramers Theory |
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150 | (2) |
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10.3 Significance of Memory Effects |
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152 | (1) |
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10.4 Applications of the Kramers Theory to Chemical Kinetics in Condensed Phases, Particularly in Biomolecular Systems |
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153 | (2) |
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10.5 A Comment on the Use of the Term "Free Energy" in Application to Chemical Kinetics and Equilibrium |
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155 | (2) |
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156 | (1) |
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11 Diffusive Dynamics on a Multidimensional Energy Landscape |
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157 | (16) |
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11.1 Generalized Langevin Equation with Exponential Memory can be Derived from a 2D Markov Model |
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157 | (4) |
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11.2 Theory of Multidimensional Barrier Crossing |
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161 | (6) |
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11.3 Breakdown of the Langer Theory in the Case of Anisotropic Diffusion: the Berezhkovskii-Zitserman Case |
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167 | (6) |
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171 | (2) |
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12 Quantum Effects in Chemical Kinetics |
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173 | (20) |
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12.1 When is a Quantum Mechanical Description Necessary? |
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173 | (1) |
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12.2 How Do the Laws of Quantum Mechanics Affect the Observed Transition Rates? |
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174 | (3) |
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12.3 Semiclassical Approximation and the Deep Tunneling Regime |
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177 | (7) |
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12.4 Path Integrals, Ring-Polymer Quantum Transition-State Theory, Instantons and Centroids |
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184 | (9) |
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191 | (2) |
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13 Computer Simulations of Molecular Kinetics: Foundation |
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193 | (10) |
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13.1 Computer Simulations: Statement of Goals |
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193 | (2) |
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13.2 The Empirical Energy |
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195 | (2) |
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197 | (2) |
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13.4 Mean First Passage Time |
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199 | (1) |
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199 | (1) |
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13.6 Equilibrium, Stable, and Metastable States |
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200 | (3) |
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202 | (1) |
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14 The Master Equation as a Model for Transitions Between Macrostates |
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203 | (10) |
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211 | (2) |
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15 Direct Calculation of Rate Coefficients with Computer Simulations |
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213 | (10) |
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15.1 Computer Simulations of Trajectories |
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213 | (6) |
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15.2 Calculating Rate with Trajectories |
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219 | (4) |
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221 | (2) |
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16 A Simple Numerical Example of Rate Calculations |
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223 | (10) |
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231 | (2) |
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17 Rare Events and Reaction Coordinates |
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233 | (8) |
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240 | (1) |
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241 | (14) |
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252 | (3) |
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19 An Example of the Use of Cells: Alanine Dipeptide |
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255 | (4) |
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257 | (2) |
Index |
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259 | |