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This study reports a model-independent limit on the temporal variation of the fine structure constant, α, using optical transition frequency measurements in 171Yb+. The researchers found a fractional variation of the frequency ratio fYb/fCs consistent with zero, leading to an upper limit on the variability of α at 2.0 × 10^-15 yr^-1, the most stringent limit from laboratory experiments to date. The findings contribute to the ongoing investigation of fundamental constants and their potential variations over

Author

Noking WU

Language

EN