Condensate of a charged boson fluid at non-integer dimensions

TL;DR

This paper investigates the properties of a charged boson fluid in non-integer dimensions, analyzing condensate and superfluid fractions at finite temperatures, and compares results with superconducting films to explore universal behaviors.

Contribution

It introduces a study of charged boson fluids in non-integer dimensions using Bogoliubov approximation, revealing universal splitting behavior in superfluid densities.

Findings

Superfluid density exhibits universal splitting behavior.

Qualitative similarity between charged boson fluid and superconducting films.

Condensate and superfluid fractions are calculated at finite temperatures.

Abstract

Condensate of a charged boson fluid at non-integer dimensions between 2 and 3 is studied. Interaction between particles is assumed to be Coulombic, and Bogoliubov approximation is applied for a weak coupling regime. The condensate and the superfluid fraction at finite temperatures and at non-integer dimensions are calculated. The theoretical results are compared with the superfluid densities of superconducting films, which show a universal splitting behavior. The qualitative similarity between the charged boson fluid and the superconducting films gives a strong clue for the origin of the universality.