MULTIPLE ISING SPINS COUPLED TO 2D QUANTUM-GRAVITY

被引：15

作者：

HARRIS, MG

WHEATER, JF

机构：

[1] Department of Physics, Theoretical Physics, University of Oxford, Oxford, OX1 3NP

来源：

NUCLEAR PHYSICS B | 1994年 / 427卷 / 1-2期

关键词：

D O I：

10.1016/0550-3213(94)90271-2

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We study a model in which p independent Ising spins are coupled to 2d quantum gravity (in the form of dynamical planar phi3 graphs). Consideration is given to the p --> infinity limit in which the partition function becomes dominated by certain graphs; we identify most of these graphs. A truncated model is solved exactly providing information about the behaviour of the full model in the limit beta --> 0. Finally, we derive a bound for the critical value of the coupling constant, beta(c) and examine the magnetization transition in the limit p --> 0.

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页码：111 / 138

页数：28

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