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arXiv 1008.2645math-phmath.MPmath.PR
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平面伊辛模型中的能量密度

The energy density in the planar Ising model

Clément Hongler, Stanislav Smirnov

摘要:

研究了正方形格点上有界单连通区域上具有+和自由边界条件的临界伊辛模型.我们将模型的能量密度与一个费米子可观测量联系起来,用离散复分析方法计算了它的标度极限。由此,我们得到了能量场单点函数在双曲度规意义下的标度极限的一个简单的精确公式。这证实了源自物理学的预测,但也提供了更高的精度。

英文摘要:

We study the critical Ising model on the square lattice in bounded simply connected domains with + and free boundary conditions. We relate the energy density of the model to a fermionic observable and compute its scaling limit by discrete complex analysis methods. As a consequence, we obtain a simple exact formula for the scaling limit of the energy field one-point function in terms of hyperbolic metric. This confirms the predictions originating in physics, but also provides a higher precision.

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