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arXiv 0904.2744hep-thcond-mat.stat-mechmath-phmath.MP
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从O(N)中的质量间隙到O(3)和O(4)西格玛模型中的非Borel求和

From the mass gap in O(N) to the non-Borel-summability in O(3) and O(4) sigma-models

Dmytro Volin

摘要:

给出了O(N)西格玛模型的质量间隙的解析推导,并研究了能量弱耦合渐近展开的高阶行为。对于足够大的N的系列是符号振荡,这是预期从大N的解决方案的西格玛模型。然而,对于N=3和N=4,级数是正负号。

英文摘要:

We give an analytical derivation of the mass gap of the O(N) sigma models and investigate a large-order behavior of the weak coupling asymptotic expansion for the energy. For sufficiently large N the series is sign-oscillating, which is expected from the large N solution of the sigma model. However, for N=3 and N=4 the series are sign positive.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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