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Abstract
In this work, we discuss a simple toy model in which the nonlinear and stochastic terms typical of dynamical collapse models are added to the Wheeler-DeWitt equation of gravity and a perfect fluid once a clock coordinate is fixed. We see that the addition of these terms allows us to explain the emergence of a single well-defined cosmological constant, starting from a superposition of different values of the latter.
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Details
1 Department of Physics, University of Trieste , Strada Costiera 11, 34151 Trieste, Italy; Istituto Nazionale di Fisica Nucleare , Trieste Section, Via Valerio 2, 34127 Trieste, Italy