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SUMMARY:On Gravity's Role in Quantum State Reduction
DTSTART:20261020T080000Z
DTEND:20261020T090000Z
DTSTAMP:20261012T170400Z
UID:indico-event-9881@indico.fysik.su.se
DESCRIPTION:Speakers: Yaron Kedem\n\nRoger Penrose\nGen. Relativ. Gravit. 
 28\, 581–600 (1996)\nThe stability of a quantum superposition of two dif
 ferent stationary mass distributions is examined\, where the perturbing e
 ffect of each distribution on the space-time structure is taken into acco
 unt\, in accordance with the principles of general relativity. It is argu
 ed that the definition of the time-translation operator for the superpose
 d space-times involves an inherent ill-definedness\, leading to an essent
 ial uncertainty in the energy of the superposed state which\, in the Newt
 onian limit\, is proportional to the gravitational self-energy $E_{\\Delt
 a}$ of the difference between the two mass distributions. This is consist
 ent with a suggested finite lifetime of the order of $\\hbar /  E_{\\Del
 ta}$ for the superposed state\, in agreement with a certain proposal made 
 by the author for a gravitationally induced spontaneous quantum state red
 uction\, and with closely related earlier suggestions by Diósi and by Gh
 irardi et al.\n\nhttps://indico.fysik.su.se/event/9881/
LOCATION:AlbaNova A5:1041 - CoPS grupprum (AlbaNova Main Building)
URL:https://indico.fysik.su.se/event/9881/
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