Condensation of charged bosons in plasma physics and cosmology

TL;DR

This paper investigates how charged boson condensates in plasma alter screening effects, leading to unique potential behaviors and magnetic properties that could influence cosmic magnetic field origins.

Contribution

It introduces a novel analysis of plasma screening with charged boson condensates and explores the magnetic implications in cosmology, including ferromagnetic W-boson condensation.

Findings

Screened potential drops as a power law and oscillates, unlike Debye screening.

W-bosons condense ferromagnetically, potentially causing spontaneous magnetization.

Magnetic fields from condensates may seed cosmic magnetic fields.

Abstract

The screening of impurities in plasma with Bose-Einstein condensate of electrically charged bosons is considered. It is shown that the screened potential is drastically different from the usual Debye one. The polarization operator of photons in plasma acquires infrared singular terms at small photon momentum and the screened potential drops down as a power of distance and even has an oscillating behavior, similar to the Friedel oscillations in plasma with degenerate fermions. The magnetic properties of the cosmological plasma with condensed W-bosons are also discussed. It is shown that W-bosons condense in the ferromagnetic state. It could lead to spontaneous magnetization of the primeval plasma. The created magnetic fields may seed galactic and intergalactic magnetic fields observed in the present-day universe.