Theory and satellite experiment for critical exponent α of λ-transition in superfluid helium

被引：27

作者：

Kleinert, H ^{[1
]}

机构：

[1] Free Univ Berlin, Inst Theoret Phys, D-14195 Berlin, Germany

来源：

PHYSICS LETTERS A | 2000年 / 277卷 / 4-5期

关键词：

D O I：

10.1016/S0375-9601(00)00688-5

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

On the basis of recent seven-loop perturbation expansion for nu (-1) = 3/(2 - a) we perform a careful reinvestigation of the critical exponent alpha governing the power behavior \T-c - T \ (-alpha) of the specific heat of superfluid helium near the phase transition. With the help of variational strong-coupling theory, we find alpha = -0.01126 +/- 0.0010, in very good agreement with the space shuttle experimental value alpha = -0.01056 +/- 0.00038. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：205 / 211

页数：7

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