Nexus, a solution to quantum gravity?
According to a recent study conducted by Stuart Marongwe, the way to reconcile the physical phenomena of the macroscopic and the microscopic world would pass through a new theory of quantum gravity that not only make it possible to describe the black holes but also could shed light on dark matter and on dark energy, the two deepest mysteries of modern physics.
A new theory of quantum gravity, brought by a physics student who graduated recently, Jose Varona from University of Havana, Cuba, could provide the means to resolve the conflict between general relativity and quantum mechanics, allowing it to not only give a most appropriate explanation for the phenomenology linked to black holes but also to gain valuable clues about the nature of dark matter and dark energy.
If you ask a theoretical what are the deeper mysteries of modern physics, you will be surprised if the answer is anything but related to quantum gravity, or the so-called “dark field” of the Universe. Today, the hottest issues are leaving physicists into the night and basically relate to some issues, for example, reconciliation of general relativity with quantum mechanics and all the efforts that a few decades trying to solve the puzzles on the nature of dark matter and dark energy.
General relativity and quantum mechanics are now the two theories more complete and more accurate that allow us to describe the stars, respectively, the galaxies and the universe on a large scale and the world of atoms and elementary particles. Nevertheless, the two theories are at odds with each other. The world of quantum mechanics is bizarre, full of oddities and where you can only predict the probability with which a given physical phenomenon occurs. Einstein always doubted that the universe behaves in a random and unpredictable ways because instead that there were strict rules that govern the laws of physics.
For decades, many attempts to describe the severity of the language of quantum mechanics have not been successful and, after Einstein’s death, not one scientist has taken seriously the problem of unifying the laws of nature. Since then, physics divided into two branches, on the one hand general relativity, which describes the phenomena of the universe and on the other hand macroscopic quantum mechanics that explains how the microscopic world behaves. It’s a bit like having two families who despite living in the same house do not get along and never talk. Although both theories accurately describe the domain in which they are valid, it seems that it is not possible to reconcile in a single theory that is able to describe the universe at all levels.
The solutions proposed to solve these problems are manifold but do not provide adequate explanations. However, the situation is changing because Stuart Marongwe, now at the Department of Physics of the McConnell College in Botswana, has proposed a self-consistent theory of quantum gravity that not only helps to explain the dark sector of the Universe, but it was in agreement with the observations. The theory has been called “Nexus”, which literally means “free” in the sense that allows you to connect in some way to general relativity with quantum theory. According to the author, this sort of “magic connection” would take the form of a particular particle space-time, namely “Nexus graviton”, which emerges in an almost natural process of unification.
An interesting feature of the Nexus graviton that distinguishes it from the graviton postulated by the standard model of elementary particles is that it is not a “mediator-particle” rather it induces a constant rotational motion of each particle that is inside of its reach. Furthermore, the Nexus graviton can be considered as a sort of “blood cell” of the vacuum energy able to merge or separate from other blood cells in a process similar to the cytokinesis of cell biology. Therefore, according to the theory, this process manifests itself in the form of dark energy and would take place throughout the space.
In conclusion, the article seems interesting because it still tries to shed light on some open questions of physics that include, among other things, the quantum description of the black holes. However, although theoretical quantum gravity can spend a year working on some theory that then no one expects to function, the solutions proposed by Marongwe open, or so the author hopes, new windows to a physical alternative.