Quantum optics seminar
Decoherence-Free Entropic Gravity: Model and Experimental Tests
Prof. Denys Bondar
Tulane University
Abstract
Zoom link: https://us02web.zoom.us/j/87146459877?pwd=4bufuQ1fHlnff5YTl1rqIYmpLqab27.1
Abstract:
Erik Verlinde's theory of entropic gravity, postulating that gravity is not a fundamental force but rather emerges thermodynamically, has garnered much attention as a possible resolution to the quantum gravity problem. Some have ruled this theory out on grounds that entropic forces are by nature noisy and entropic gravity would therefore display far more decoherence than is observed in ultra-cold neutron experiments. We address this criticism by modeling linear gravity acting on small objects as an open quantum system. We show that the proposed master equation is fully compatible with the qBounce experiment for ultra-cold neutrons. In addition, comparing our mode of entropic gravity to the Diosi-Penrose model for gravity induced decoherence indicates that the two theories are incompatible.
Abstract:
Erik Verlinde's theory of entropic gravity, postulating that gravity is not a fundamental force but rather emerges thermodynamically, has garnered much attention as a possible resolution to the quantum gravity problem. Some have ruled this theory out on grounds that entropic forces are by nature noisy and entropic gravity would therefore display far more decoherence than is observed in ultra-cold neutron experiments. We address this criticism by modeling linear gravity acting on small objects as an open quantum system. We show that the proposed master equation is fully compatible with the qBounce experiment for ultra-cold neutrons. In addition, comparing our mode of entropic gravity to the Diosi-Penrose model for gravity induced decoherence indicates that the two theories are incompatible.