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arxiv: 0812.1794 · v1 · submitted 2008-12-09 · 🌌 astro-ph

Being PC: Principal Components and Dark Energy

classification 🌌 astro-ph
keywords darkenergyprincipaladditionanalysisassumptionsbriefcalculations
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Principal component analysis is considered as an addition to the well-tested parametrization w(a)=w_0+w_a(1-a) for the dark energy equation of state. This brief note cautions against some unjustified assumptions in interpretation of PCA calculations, giving quantified examples.

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