Lambda-CDM model: Difference between revisions

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Cosmological lithium problem: verified review source says 3.5
S8 tension: Ref says "The tension in the S8 parameter (or in the related σ8 parameter) has added yet another question mark over the validity of the standard �CDM cosmology."
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=== ''S''<sub>8</sub> tension ===
The "<math>S_8</math> tension" inis cosmologya isname for another majorquestion problemmark for the ΛCDM model.<ref name="Snowmass21"/> The <math>S_8</math> parameter in the ΛCDM model quantifies the amplitude of matter fluctuations in the late universe and is defined as
: <math>S_8 \equiv \sigma_8\sqrt{\Omega_{\rm m}/0.3}</math>