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Explore quantum control and semiclassical quantum gravity in this 1-hour 7-minute lecture by Prof Lajos Diósi from the Wigner Research Center for Physics and Eötvös Loránd University. Delve into the challenges of developing a usable quantum gravity theory and learn about the application of semiclassical theory as an alternative approach. Examine the implications of hybrid quantum-classical coupling, including its causal nature and violations of quantum theory linearity and the Born rule. Discover how modifying the standard mean-field coupling, drawing from quantum measurement and feedback mechanisms in quantum optics, can potentially resolve these anomalies. Investigate the Newtonian limit and its connection to the gravity-related spontaneous wave function collapse theory proposed by Penrose and the speaker. This Wednesday colloquium, presented at the Centrum Fizyki Teoretycznej PAN on 2023-04-26, offers valuable insights into cutting-edge research in theoretical physics.
