BEGIN:VCALENDAR VERSION:2.0 PRODID:researchseminars.org CALSCALE:GREGORIAN X-WR-CALNAME:researchseminars.org BEGIN:VEVENT SUMMARY:Linda van Manen (University of Jena) DTSTART:20250429T140000Z DTEND:20250429T150000Z DTSTAMP:20260417T072625Z UID:3cqfs/35 DESCRIPTION:Title: E nvironmental gravitational decoherence with a higher derivative theory \nby Linda van Manen (University of Jena) as part of Tricontinental Quantu m Fundamentals Seminar\n\n\nAbstract\nWe discuss the decoherence in a quan tum system induced by interaction with gravitational degrees of freedom th at are part of a higher derivative theory. The deformation of a mass distr ibution due to gravitational waves acquires naturally a mass quadrupole mo ment. This adds higher derivative dynamics of the quadrupole moment to the unitary evolution of the system\, where the quadrupole moment oscillates with the gravitational frequencies following a higher derivative theory. T he consequence of higher derivatives in the dynamics is that four canonica l variables describe the system. This departure from the usual particle po sition and momentum operators gives an entirely different interpretation o f the decoherence basis. This model focuses on the open dynamics of the qu adrupole moment\, rather than on individual particles. As such\, a short e xample is given to utilize quadrupole measurements to probe gravitational decoherence and noise. We first derive a Langevin equation for a lower der ivative model and show how higher derivatives naturally emerge on the boun dary. A quantum master equation is derived for the emerging quadrupole mom ent\, considering that the environment is a higher derivative theory of gr avity.\n LOCATION:https://researchseminars.org/talk/3cqfs/35/ END:VEVENT END:VCALENDAR