Propagation of relativistic charged particles in ultracold atomic gases with Bose-Einstein condensates

TL;DR

This paper explores how relativistic charged particles propagate through Bose-Einstein condensates, revealing energy exchange phenomena like Cherenkov radiation and potential particle acceleration within ultracold atomic gases.

Contribution

It provides a theoretical analysis of Cherenkov effects and energy transfer mechanisms for relativistic particles in Bose-Einstein condensates, including conditions for particle acceleration.

Findings

Relativistic particles can both lose and gain energy in the condensate.

Cherenkov effect can be used to determine atomic spectral characteristics.

Conditions for particle acceleration in multi-component condensates are identified.

Abstract

We study theoretically some effects produced by a propagation of the charged particles in dilute gases of alkali-metal atoms in the state with Bose-Einstein condensates. The energy change of the high-speed (relativistic) particle that corresponds to the Cherenkov effect in the condensate is investigated. We show that in the studied cases the particle can both loose and receive the energy from a gas. We find the necessary conditions for the particle acceleration in the multi-component condensate. It is shown that the Cherenkov effect in Bose-Einstein condensates can be used also for defining the spectral characteristics of atoms.