The Mysterious Connection Between Gravity and Dark Matter.
A new study from SISSA suggests that dark matter interacts with gravity in a non-local way, which could provide a fresh perspective on the still unclear nature of dark matter. The study proposes a new model of non-local interaction between the dark matter of a galaxy and gravity, using fractional calculus, a mathematical tool first developed in the 17th century. This non-locality appears to emerge as a collective behavior of dark matter's particles within a confined system, proving particularly relevant in small-sized galaxies. A thorough understanding of this phenomenon could bring us closer to what dark matter really is.