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Anomalous specific heat of liquid3He above the superfluid transition temperature

โœ Scribed by A. Pal; P. Bhattacharyya

Publisher
Springer US
Year
1981
Tongue
English
Weight
341 KB
Volume
43
Category
Article
ISSN
0022-2291

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โœฆ Synopsis

The contribution to the specific heat due to order parameter fluctuations in liquid SHe just above the super)quid transition temperature Tc is calculated exactly within a Landau theory approach. The effect turns out to be unobservably small and thus cannot explain the large (-9 %) rise in specific heat above the normal state value at the saturated vapor pressure in a recently reported experiment. We do not find the divergence of the specific heat at Tc obtained earlier by Thouless from a microscopic calculation and indicate how the difference can be reconciled.

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We present numerical results ]:or the specific heat of 3He-B in the weakcoupling-plus model. We find that the full temperature dependence of the specific heat is accurately determined by the specific heat jump at Tr This provides a test of the Tc/TF expansion scheme for calculating strong coupling e