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AuthorMadras, Neal. author
TitleThe Self-Avoiding Walk [electronic resource] / by Neal Madras, Gordon Slade
ImprintBoston, MA : Birkhรคuser Boston, 1996
Connect tohttp://dx.doi.org/10.1007/978-1-4612-4132-4
Descript XIV, 427 p. online resource

SUMMARY

A self-avoiding walk is a path on a lattice that does not visit the same site more than once. In spite of this simple definition, many of the most basic questions about this model are difficult to resolve in a mathematically rigorous fashion. In particular, we do not know much about how far an nยญ step self-avoiding walk typically travels from its starting point, or even how many such walks there are. These and other important questions about the self-avoiding walk remain unsolved in the rigorous mathematical sense, although the physics and chemistry communities have reached consensus on the answers by a variety of nonrigorous methods, including computer simulations. But there has been progress among mathematicians as well, much of it in the last decade, and the primary goal of this book is to give an account of the current state of the art as far as rigorous results are concerned. A second goal of this book is to discuss some of the applications of the self-avoiding walk in physics and chemistry, and to describe some of the nonrigorous methods used in those fields. The model originated in chemยญ istry several decades ago as a model for long-chain polymer molecules. Since then it has become an important model in statistical physics, as it exhibits critical behaviour analogous to that occurring in the Ising model and related systems such as percolation


CONTENT

1 Introduction -- 1.1 The basic questions -- 1.2 The connective constant -- 1.3 Generating functions -- 1.4 Critical exponents -- 1.5 The bubble condition -- 1.6 Notes -- 2 Scaling, polymers and spins -- 2.1 Scaling theory -- 2.2 Polymers -- 2.3 The N ? 0 limit -- 2.4 Notes -- 3 Some combinatorial bounds -- 3.1 The Hammersley-Welsh method -- 3.2 Self-avoiding polygons -- 3.3 Kestenโ{128}{153}s bound on cN -- 3.4 Notes -- 4 Decay of the two-point function -- 4.1 Properties of the mass -- 4.2 Bridges and renewal theory -- 4.3 Separation of the masses -- 4.4 Ornstein-Zernike decay of GZ(0, x) -- 4.5 Notes -- 5 The lace expansion -- 5.1 Inclusion-exclusion -- 5.2 Algebraic derivation of the lace expansion -- 5.3 Example: the memory-two walk -- 5.4 Bounds on the lace expansion -- 5.5 Other models -- 5.6 Notes -- 6 Above four dimensions -- 6.1 Overview of the results -- 6.2 Convergence of the lace expansion -- 6.3 Fractional derivatives -- 6.4 cn and the mean-square displacement -- 6.5 Correlation length and infrared bound -- 6.6 Convergence to Brownian motion -- 6.7 The infinite self-avoiding walk -- 6.8 The bound on cn(0,x) -- 6.9 Notes -- 7 Pattern theorems -- 7.1 Patterns -- 7.2 Kestenโ{128}{153}s Pattern Theorem -- 7.3 The main ratio limit theorem -- 7.4 End patterns -- 7.5 Notes -- 8 Polygons, slabs, bridges and knots -- 8.1 Bounds for the critical exponent ?sing -- 8.2 Walks with geometrical constraints -- 8.3 The infinite bridge -- 8.4 Knots in self-avoiding polygons -- 8.5 Notes -- 9 Analysis of Monte Carlo methods -- 9.1 Fundamentals and basic examples -- 9.2 Statistical considerations -- 9.3 Static methods -- 9.4 Length-conserving dynamic methods -- 9.5 Variable-length dynamic methods -- 9.6 Fixed-endpoint methods -- 9.7 Proofs -- 9.8 Notes -- 10 Related topics -- 10.1 Weak self-avoidance and the Edwards model -- 10.2 Loop-erased random walk -- 10.3 Intersections of random walks -- 10.4 The โ{128}{156}myopicโ{128}{157} or โ{128}{156}trueโ{128}{157} self-avoiding walk -- A Random walk -- B Proof of the renewal theorem -- C Tables of exact enumerations -- Notation


Mathematics Probabilities Mathematics Probability Theory and Stochastic Processes



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