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arXiv · 1510.04936

The invariant polarisation-tensor field for deuterons in storage rings and the Bloch equation for the polarisation-tensor density

D. P. Barber
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Abstract

I extend and update earlier work, summarised in [1], whereby the invariant polarisation-tensor field (ITF) for deuterons in storage rings was introduced to complement the invariant spin field (ISF). Taken together, the ITF and the ISF provide a definition of the equilibrium spin density-matrix field which, in turn, offers a clean framework for describing equilibrium spin-1 ensembles in storage rings. I show how to construct the ITF by stroboscopic averaging, I give examples, I discuss adiabatic invariance and I introduce a formalism for describing the effect of noise and damping.

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D. P. Barber. 2016-02-04. The invariant polarisation-tensor field for deuterons in storage rings and the Bloch equation for the polarisation-tensor density. https://arxiv.org/abs/1510.04936

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