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HET Seminar | A Model of Couplings

Jonathan Heckman (UPenn)
Friday, April 9, 2021
3:00-4:00 PM
Off Campus Location
Seminar link:

String theory predicts that the couplings of Nature descend from dynamical fields. All known string-motivated particle physics models also come with a wide range of possible extra sectors. It is common to posit that such moduli are frozen to a background value, and that extra sectors can be nearly completely decoupled. In this talk we show that performing a partial trace over all sectors other than the visible sector generically puts the visible sector in a mixed state, with coupling constants drawn from a quantum statistical ensemble. An observable consequence of this entanglement between visible and extra sectors is that the reported values of couplings will appear to have an irreducible variance. There is a consequent interplay between energy range and precision of an experiment that allows an extended reach for new physics.
Building: Off Campus Location
Location: Virtual
Event Type: Lecture / Discussion
Tags: High Energy Theory Seminar, Physics, Science
Source: Happening @ Michigan from Leinweber Center for Theoretical Physics, Department of Physics, HET Seminars, Leinweber Center for Theoretical Physics Seminars, Leinweber Center for Theoretical Physics High Energy Theory Seminars