Screening effects in plasma with charged Bose condensate

TL;DR

This paper investigates how Coulomb fields are screened in a plasma containing a charged Bose condensate, revealing unique potential behaviors including power-law decay and oscillations, distinct from traditional Debye screening.

Contribution

It provides a detailed analysis of screening effects in plasma with charged Bose condensate, highlighting novel potential behaviors and differences from fermionic systems.

Findings

Potential includes power-law decay terms.

Presence of oscillatory potential components.

Distinct features compared to fermionic Friedel oscillations.

Abstract

Screening of Coulomb field of test charge in plasma with Bose condensate of electrically charged scalar field is considered. It is found that the screened potential contains several different terms: one decreases as a power of distance (in contrast to the usual exponential Debye screening), some other oscillate with an exponentially decreasing envelope. Similar phenomenon exists for fermions (Friedel oscillations), but fermionic and bosonic systems have quite different features. Several limiting cases and values of the parameters are considered and the resulting potentials are presented.