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Precision Enhancement, FOM 2Exploit a DegeneracyAngstmann, Dzuba, Flambaum, Nevsky, Karshenboim, J Phys B, 39 (2006)Nguyen, Budker, Lamoreaux, Torgerson, PRA, 022105 (2004)DeMille, Sainis, Sage, Bergeman, Kotochigova, Tiesinga, arXiv:0709.0963Consider monitoringσσΔΩ / Ω = 1×10( )−15Δ μ/ μ = 2×10( )−18Ω =E −E′−3With a degeneracy <strong>of</strong> Ω= 10 En,a fractional uncertaintyMuch better!now imposes• Molecular complexity is definitely a good thing here• A long-lived state is needed• Added benefit: effect <strong>of</strong> clock’s dependence on α, μ suppressedn
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