Authors
Prof. Denis J. Evans
Australian National University
Department of Applied Mathematics
Research School of Physics and Engineering
Canberra ACT, 2601
Australia
Prof. Debra J. Searles
The University of Queensland
Australian Institute for Bioengineering and Nanotechnology Centre for
Theoretical and Computational
Molecular Science
School of Chemistry and Molecular Biosciences
Brisbane, Qld 4072
Australia
Dr. Stephen R. Williams
Australian National University
Research School of Chemistry
Building 35
Research School of Chemistry
Canberra, ACT 2601
Australia
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Cover Design Formgeber, Mannheim
Microscopic Dynamics | |
N | Number of particles in the system. |
Cartesian dimensions of the system – usually three. | |
D | Accessible phase space domain |
-dimensional vector, representing the particle positions. | |
-dimensional vector, representing the particle momenta. | |
-dimensional phase space vector, representing all q's and p's. | |
Very small volume element of phase space centered on . | |
Probability of observing sets of trajectories inside at time t. | |
Infinitesimal phase space volume centered on . | |
Probability that the time-integrated dissipation function is plus/minus over the time interval (0,t). | |
Time reversal map . | |
Kawasaki or K-map of phase space vector for planar Couette flow, , where is the xy component of the strain rate tensor. | |
f-Liouvillean. | |
f-propagator. | |
p-Liouvillean. | |
p-propagator. | |
p-propagator. | |
Peculiar kinetic energy. | |
Interparticle potential energy. | |
Pair potential of particle i with particle j. | |
Position vector from particle i to particle j. | |
Distance between particles i and j. | |
Force on particle i due to particle j | |
. | |
Internal energy, . | |
Hamiltonian at phase vector . | |
Deviation function – even in the momenta. | |
Extended Hamiltonian for Nosé–Hoover dynamics. | |
Peculiar kinetic energy of thermostatted particles , where is the kinetic temperate of the thermostat. If the system is isokinetic, – see thermodynamic variables below. | |
Number of thermostatted particles. | |
Gaussian or Nosé–Hoover thermostat or ergostat multiplier. | |
Time constant. | |
Rate of transfer of heat to the thermostat/system of interest. | |
Phase space expansion factor. | |
Switch function. | |
Dissipative flux. | |
Dissipative external field. | |
m | Particle mass. |
Stability matrix. | |
Time-ordered exponential operator, latest times to left. | |
Tangent vector propagator . | |
Lyapunov exponent. | |
Largest/smallest Lyapunov exponent for steady or equilibrium state. | |
Statistical Mechanics | |
Time average of some phase variable, . | |
Ensemble average of A at time t, on a time-evolved path. | |
Time-dependent phase space distribution function. | |
Equilibrium microcanonical ensemble average. | |
Equilibrium canonical ensemble average, | |
Equilibrium canonical distribution. | |
Equilibrium microcanonical distribution. | |
Phase space expansion factor. | |
The instantaneous dissipation function, at time t1 on a phase space trajectory that started at phase and defined with respect to the distribution function at time t2. , | |
. | |
Three-dimensional position vector. | |
Three-dimensional local fluid streaming velocity, at Cartesian position r and time t. | |
Fine-grained Gibbs entropy, . | |
Z | Partition function – normalization for the equilibrium phase space distribution. |
Canonical partition function. | |
Microcanonical partition function. | |
Mechanical Variables | |
Q | Heat of thermostat. |
V | Volume of system of interest. |
U | Internal energy, of the system of interest. |
W | Work performed on system of interest. |
Y | Purely dissipative generalized dimensionless work. |
X | Generalized dimensionless work. |
Thermodynamic Variables | |
T | Equilibrium temperature the system will relax to if it is so allowed. |
Boltzmann factor (reciprocal temperature) . | |
Irreversible calorimetric entropy, defined by , where is the instantaneous equilibrium temperature the system would relax to if it was so allowed. In Section 5.7, we show that the Gibbs entropy and the irreversible calorimetric entropy are equal, up to an additive constant. | |
The calorimetric entropy defined in classical thermodynamics as , where T is equilibrium temperature of the system. This entropy is a state function. | |
A | Helmholtz free energy; . |
Ane | Nonequilibrium Helmholtz free energy; . This is not a state function. |
Total entropy production – only defined in the weak field limit close to equilibrium. | |
Zero-frequency elastic shear modulus. | |
Infinite-frequency shear modulus. | |
Transport | |
Strain (note: is sometimes used to fix the system's total momentum). | |
Small strain. | |
Strain rate. | |
xy element of the pressure tensor. | |
xy element of the ensemble averaged stress tensor. | |
Limiting zero-frequency shear viscosity of a solid. | |
Zero-frequency shear viscosity of a fluid. | |
Maxwell relaxation time. | |
Dissipative flux. | |
Wavector dependent transverse momentum density. | |
Maxwell model memory function for shear viscosity. | |
Zero-frequency shear viscosity of a Maxwell fluid. | |
Mathematics | |
Heaviside step function at t = 0. | |
For all. | |
! | For almost all. The exceptions have zero measure. |
Arbitrary scaling parameter. | |
Laplace transform of . | |
Anti-Laplace transform of . | |
Cyclic integral of a periodic function. | |
Quasi-static integral from a to b. | |
Kaplan–Yorke dimension of a nonequilibrium steady state. |
Note: Upper case subscripts/superscripts indicate people. Lower case is used in most other cases. Subscripts are preferred to superscripts so as to not confuse powers with superscripts. Italics are used for algebraic initials. Nonitalics for word initials. (e.g., T-mixing not T-mixing because T stands for Transient, N-particle not N-particle.)
DJE, DJS, and SRW would like to thank the Australian Research Council for the long-term support of the research projects that ultimately led to the writing of this book. DJE would also like to acknowledge the assistance of his many fourth-year honors, science, and mathematics students who over the last decade took his course: “The Mathematical Foundations of Statistical Thermodynamics.” The authors also wish to thank their former PhD students for their contributions to some of the material described in this book: especially, Dr Charlotte Petersen, Dr Owen Jepps, Dr James Reid, and Dr David Carberry. The first experimental verification of a fluctuation theorem was carried out in Professor Edith Sevick's laboratory at ANU with excellent technical support provided by Dr Genmaio Wang. The authors would also like to thank Professor Lamberto Rondoni who helped them understand some of the elements of ergodic theory.