The contribution to the specific heat due to order parameter fluctuations in liquid 3He just above the superfluid transition temperature T c 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 T cobtained earlier by Thouless from a microscopic calculation and indicate how the difference can be reconciled.
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Pal, A., Bhattacharyya, P. Anomalous specific heat of liquid 3He above the superfluid transition temperature. J Low Temp Phys 43, 17–24 (1981). https://doi.org/10.1007/BF00118619
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DOI: https://doi.org/10.1007/BF00118619