Static Structure Factor and Static Response Function of Superfluid Helium 4: a Comparative Analysis
نویسندگان
چکیده
منابع مشابه
Static response function for longitudinal and transverse excitations in superfluid helium.
The sum rule formalism is used to evaluate rigorous bounds for the density and current static response functions in superfluid He at zero temperature. Both lower and upper bounds are considered. The bounds are expressed in terms of ground state properties (density and current correlation functions) and of the interatomic potential. The results for the density static response significantly impro...
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ژورنال
عنوان ژورنال: Journal of Low Temperature Physics
سال: 2008
ISSN: 0022-2291,1573-7357
DOI: 10.1007/s10909-008-9809-3