Study of structure factor of interacting bosons with reference to properties of liquid He4 below Lambda Transition Temperature

摘要

The structure factor for the interacting Bose system at finite temperatures below the Lambda-transition temperature of liquid He4 has been studied for two types of interacting potentials using a theoretical formulation due to Isihara [Physica B (Netherlands), 106 (1981) 161] and Isihara and Samulski [Physica A (Netherlands), 86 (1977) 257]. In our work we have considered liquid He4 below its Lambda transition temperature which makes it imperative for us to consider the important aspects of much body interaction by taking recourse to the reaction matrix formalism of many body theories. We expect that our work will provide some additional inputs to the theoretical studies made till date for derivation of the energy excitation spectrum and structure factor for a system of interacting Bore Assembly.