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Article
On numerical integration with high-order quadratures: with application to the Rayleigh–Sommerfeld integral
The paper focusses on the advantages of using high-order Gauss–Legendre quadratures for the precise evaluation of integrals with both smooth and rapidly changing integrands. Aspects of their precision are anal...
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Article
A theoretical argument against a Bose-Einstein condensate in superfluid4He
Recent high-momentum-transfer inelastic neutron scattering measurements on superfluid4He yield lineshapes that have been argued to be consistent with the absence of any Bose-Einstein condensation. Here we lend th...
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Chapter
Superfluid Density in Pairing Theory of Superfluidity
It has long been recognized that the question of whether a system is superfluid or not may be formulated in terms of the properties of its linear response kernel, for such a kernel can tell us what the ultimat...
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Article
A conserving approximation evaluation of superfluid density within the pair theory of superfluids
The evaluation of the superfluid density, defined by the weak field response of the system, within the pairing theory of “pure” superfluids of Fermi or Bose statistics is considered. The need for evaluating th...
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Article
Helium-4
Helium-4
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Article
On the pairing theory of the bose superfluid
In analogy to the BCS theory of superconductivity, a self-consistent pairing theory of the Bose superfluid is developed along lines closely resembling the original Bose pairing model of Valatin and Butler. A n...
