School and Conference on Modern Mathematical Physics

9 - 14 September 2019, Belgrade, Serbia


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    E-mail: mphys10@ipb.ac.rs


David Edward Bruschi

On the weight of entanglement

One of the most important open questions is how do quantum systems gravitate. Regardless of the tremendous efforts in studying this fundamental aspect of Nature, no conclusive answer to this question has yet been given.

We discuss the study of the effects of entanglement on the gravitational field. Our work employs semi-classical gravity in a regime where it arguably can give sensible predictions. Furthermore, motivated by considerations on the nature of energy in quantum systems, we propose a radical change to the theory of gravitation, arguing that not all energy is a source for gravity. We analyse the proposed modification and discuss the implications. We conclude by emphasising the necessary next steps to transform this idea and intuition, not conclusively established, into the core of a new approach to understanding how quantum matter gravitates.


Institute of Physics Belgrade (University of Belgrade)
Belgrade, Serbia
Faculty of Mathematics (University of Belgrade)
Belgrade, Serbia
Mathematical Institute (Serbian Academy of Sciences and Arts)
Belgrade, Serbia
Faculty of Science (University of Kragujevac)
Kragujevac, Serbia
Serbian Academy of Sciences and Arts (SASA)
Belgrade, Serbia


Institute of Nuclear Sciences "VinĨa" (University of Belgrade)
Belgrade, Serbia
Institute of Physics (University of Kragujevac)
Kragujevac, Serbia
Faculty of Physics (University of Belgrade)
Belgrade, Serbia
Faculty of Sciences (University of Novi Sad)
Novi Sad, Serbia
School of Electrical Engineering (University of Belgrade)
Belgrade, Serbia
SEENET-MTP (Southeastern European Network in Mathematical and Theoretical Physics)
Nis, Serbia