# How can the cosmological constant be adjustable ?

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How can the cosmological constant be adjustable ? As far as I understand , The zero point energies of the quantum fields of the standard model contribute to the vacuum energy. This gives a contribution to vacuum energy that is of the order of the ultraviolet cutoff. But people propose some mechanisms that can explain a near zero positive cosmological constant. In these models, the cosmological constant is adjustable. My  question is: In these scenarios, where does this huge contribution from the vaccum of the Standard model go?

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