Renormalization-Group Theory and Universality along the Lambda Line of $^4$He

Details Renormalization-Group Theory and Universality along the Lambda Line of $^4$He Renormalization-Group Theory and Universality along the Lambda Line of $^4$He

1998-03-09

arxiv.org/abs/cond-mat/9803095v2

Physics

Condensed Matter

Statistical Mechanics

Proceedings of the 1997 NASA/JPL Workshop on Fundamental Physics in Microgravity, Santa Barbara, May 7-9, 1997, edited by D. S

Scientific paper

The present status of the renormalization-group (RG) predictions on the superfluid density $\rho_s$ and the specific heat $C^+$ and $C^-$ near the $\lambda$-line of $^4He$ is briefly reviewed. Particular attention is given to universal amplitude ratios related to these quantities. The goals of a new theory project are presented that involves higher-order calculations of the amplitude functions of $\rho_s, C^+$ and $C^-$ which are of fundamental importance for a test of the universality predictions of the RG theory.

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