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15.01.2024 / 15:00 - 16:00 / Hamburg, SR2, building 2a
Theory SeminarHierarchies from Landscape Probability Gradients and Critical Boundaries
Oleksii Matsedonskyi (U Cambridge)
The physical landscape of our universe can be composed of a large number of vacua, each featuring different values of fundamental parameters. If the gradient of a probability distribution on this landscape aligns with a variation of some parameter, the most probable value of the latter may be pushed to some non-generic value. Such non-generic values can be associated to critical boundaries, where qualitative changes of the landscape properties happen, or an anthropic bound is located. Assuming the standard volume-weighted and the local probability measures, I will discuss ordered landscapes which can produce several types of the aligned probability gradients. The resulting values of the gradients are defined by the "closeness" of a given vacuum to the highest- or the lowest-energy vacuum. Using these ingredients I will present a landscape scanning independently the Higgs mass and the cosmological constant (CC). The probability gradient pushes the Higgs mass to its observed value, where a structural change of the landscape takes place, while the CC is chosen anthropically.
More Information: https://indico.desy.de/event/42739/
