On the 1/n expansion
On the 1/n expansion
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关于 1/n 展开式
DOI:
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发表时间:
1980
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通讯作者:
A. Kupiainen
中科院分区:
文献类型:
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作者:
A. Kupiainen
The 1/n expansion is considered for then-component non-linear σ-model (classical Heisenberg model) on a lattice of arbitrary dimensions. We show that the expansion for correlation functions and free energy is asymptotic, for all temperatures above the spherical model critical temperature. Furthermore, the existence of a mass gap is established for these temperatures andn sufficiently large.