Bloch-Siegert shift in application to the astrophysical determination of the fundamental constants variation

TL;DR

This paper evaluates the Bloch-Siegert shift under astrophysical magnetic field conditions and emphasizes its importance in accurately detecting potential variations in fundamental constants over time.

Contribution

It provides a detailed analysis of the Bloch-Siegert shift in astrophysical environments, highlighting its impact on frequency measurements related to fundamental constants.

Findings

The Bloch-Siegert shift varies with magnetic field strength in astrophysical contexts.

This shift can significantly affect the precision of fundamental constants measurements.

Careful consideration of electromagnetic field effects is necessary in astrophysical frequency analysis.

Abstract

We have evaluated the Bloch-Siegert shift for the different values of magnetic field's strengths defined at astrophysical conditions, i.e. when the stars with the strong surface magnetic fields are taken as a powerful pumping source of radiation. It is found that the additional shift of resonant frequency should be taken into account in the search for the time variation of the fundamental constants. The main conclusion is that the influence of the electromagnetic field shift should be considered carefully in each special case of the corresponding frequency determination.