paper

Theory and Satellite Experiment for Critical Exponent alpha of lambda-Transition in Superfluid Helium

arXiv:cond-mat/9906107 · doi:10.1016/S0375-9601(00)00688-5

Abstract

On the basis recent seven-loop perturbation expansion for nu^{-1} = 3/(2 - alpha) 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.

Final version to be printed in Phys. Lett. A. Author Information under http://www.physik.fu-berlin.de/~kleinert/institution.html . Latest update of paper also at http://www.physik.fu-berlin.de/~kleinert/286

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