Electronic ISBN:  9781470405410 
Product Code:  MEMO/199/935.E 
100 pp 
List Price:  $70.00 
MAA Member Price:  $63.00 
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Book DetailsMemoirs of the American Mathematical SocietyVolume: 199; 2009MSC: Primary 82; Secondary 05; 41; 60;
The author defines the correlation of holes on the triangular lattice under periodic boundary conditions and studies its asymptotics as the distances between the holes grow to infinity. He proves that the joint correlation of an arbitrary collection of triangular holes of even sidelengths (in lattice spacing units) satisfies, for large separations between the holes, a Coulomb law and a superposition principle that perfectly parallel the laws of two dimensional electrostatics, with physical charges corresponding to holes, and their magnitude to the difference between the number of rightpointing and leftpointing unit triangles in each hole.
The author details this parallel by indicating that, as a consequence of the results, the relative probabilities of finding a fixed collection of holes at given mutual distances (when sampling uniformly at random over all unit rhombus tilings of the complement of the holes) approach, for large separations between the holes, the relative probabilities of finding the corresponding two dimensional physical system of charges at given mutual distances. Physical temperature corresponds to a parameter refining the background triangular lattice.
He also gives an equivalent phrasing of the results in terms of covering surfaces of given holonomy. From this perspective, two dimensional electrostatic potential energy arises by averaging over all possible discrete geometries of the covering surfaces. 
Table of Contents

Chapters

Introduction

Chapter 1. Definition of $\hat {\omega }$ and statement of main result

Chapter 2. Deducing Theorem 1.2 from Theorem 2.1 and Proposition 2.2

Chapter 3. A determinant formula for $\hat {\omega }$

Chapter 4. An exact formula for $U_s(a, b)$

Chapter 5. Asymptotic singularity and Newton’s divided difference operator

Chapter 6. The asymptotics of the entries in the $U$part of $M’$

Chapter 7. The asymptotics of the entries in the $P$part of $M’$

Chapter 8. The evaluation of $\det (M”)$

Chapter 9. Divisibility of $\det (M”)$ by the powers of $q  \zeta $ and $q  \zeta ^{1}$

Chapter 10. The case $q = 0$ of Theorem 8.1, up to a constant multiple

Chapter 11. Divisibility of $\det (dM_0)$ by the powers of $(x_i  x_j)  \zeta ^{\pm 1}(y_i  y_j)  ah$

Chapter 12. Divisibility of $\det (dM_0)$ by the powers of $(x_i  z_j)  \zeta ^{\pm 1}(y_i  \hat {\omega }_j)$

Chapter 13. The proofs of Theorem 2.1 and Proposition 2.2

Chapter 14. The case of arbitrary slopes

Chapter 15. Random covering surfaces and physical interpretation

Appendix. A determinant evaluation


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The author defines the correlation of holes on the triangular lattice under periodic boundary conditions and studies its asymptotics as the distances between the holes grow to infinity. He proves that the joint correlation of an arbitrary collection of triangular holes of even sidelengths (in lattice spacing units) satisfies, for large separations between the holes, a Coulomb law and a superposition principle that perfectly parallel the laws of two dimensional electrostatics, with physical charges corresponding to holes, and their magnitude to the difference between the number of rightpointing and leftpointing unit triangles in each hole.
The author details this parallel by indicating that, as a consequence of the results, the relative probabilities of finding a fixed collection of holes at given mutual distances (when sampling uniformly at random over all unit rhombus tilings of the complement of the holes) approach, for large separations between the holes, the relative probabilities of finding the corresponding two dimensional physical system of charges at given mutual distances. Physical temperature corresponds to a parameter refining the background triangular lattice.
He also gives an equivalent phrasing of the results in terms of covering surfaces of given holonomy. From this perspective, two dimensional electrostatic potential energy arises by averaging over all possible discrete geometries of the covering surfaces.

Chapters

Introduction

Chapter 1. Definition of $\hat {\omega }$ and statement of main result

Chapter 2. Deducing Theorem 1.2 from Theorem 2.1 and Proposition 2.2

Chapter 3. A determinant formula for $\hat {\omega }$

Chapter 4. An exact formula for $U_s(a, b)$

Chapter 5. Asymptotic singularity and Newton’s divided difference operator

Chapter 6. The asymptotics of the entries in the $U$part of $M’$

Chapter 7. The asymptotics of the entries in the $P$part of $M’$

Chapter 8. The evaluation of $\det (M”)$

Chapter 9. Divisibility of $\det (M”)$ by the powers of $q  \zeta $ and $q  \zeta ^{1}$

Chapter 10. The case $q = 0$ of Theorem 8.1, up to a constant multiple

Chapter 11. Divisibility of $\det (dM_0)$ by the powers of $(x_i  x_j)  \zeta ^{\pm 1}(y_i  y_j)  ah$

Chapter 12. Divisibility of $\det (dM_0)$ by the powers of $(x_i  z_j)  \zeta ^{\pm 1}(y_i  \hat {\omega }_j)$

Chapter 13. The proofs of Theorem 2.1 and Proposition 2.2

Chapter 14. The case of arbitrary slopes

Chapter 15. Random covering surfaces and physical interpretation

Appendix. A determinant evaluation