Using the 2024 LISA Pathfinder noise decomposition, the CSL collapse rate is bounded below 8.3e-11 s^-1 at r_CSL=1e-7 m, and a new underground torsion balance design is projected to reach 3e-11 s^-1.
Models for universal reduction of macroscopic quantum fluctuations
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Updating the constraint on the quantum collapse models via kilogram masses
Using the 2024 LISA Pathfinder noise decomposition, the CSL collapse rate is bounded below 8.3e-11 s^-1 at r_CSL=1e-7 m, and a new underground torsion balance design is projected to reach 3e-11 s^-1.