Characteristic frequency of the magnetic radiation of spinor condensates

TL;DR

This paper investigates the magnetic radiation emitted by spinor condensates, revealing a characteristic spectral line with properties that scale with particle number, and introduces a new analytical technique for calculating relevant matrix elements.

Contribution

The authors develop an analytical method using fractional parentage coefficients to calculate matrix elements between total spin-states in spinor condensates.

Findings

Identified a narrow spectral line with wavelength proportional to N^(-2/5).

Found transition probability scales as N^(17/5).

Suggests possibility of high-probability short wave radiation with many atoms.

Abstract

The magnetic radiation of the fully-condensed states of $^{23}$Na condensates have been studied. A narrow characteristic spectral line with a wave length proportional to N^(-2/5) (N is the number of particles) and with a probability of transition proportional to N^(17/5) emitted (absorbed) by the condensate was found. It implies that short wave radiation with a huge probability of transition can be obtained if numerous atoms are trapped. A new technique developed by the authors, namely, the analytical forms of the fractional parentage coefficients, was used to calculate analytically the matrix elements between the total spin-states.