A Markov-chain fit of a one-parameter time-varying vacuum model to cosmic chronometer and Pantheon supernova data finds the deviation parameter alpha is consistent with 0, i.e., no clear evidence against LambdaCDM.
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Constraints on $\Lambda(t)$CDM cosmology using Cosmic Chronometers and Supernova data
A Markov-chain fit of a one-parameter time-varying vacuum model to cosmic chronometer and Pantheon supernova data finds the deviation parameter alpha is consistent with 0, i.e., no clear evidence against LambdaCDM.