“It’s entirely plausible that there could exist multiple forms of matter and energy that we have not yet discovered,” cosmologist and particle physicist, Dan Hooper told The Daily Galaxy, referring to the possibility that dark particles could couple with the Higgs boson creating a portal to the dark sector of the Universe. “If there are even very feeble interactions between the known particles and those we have not yet discovered we could hope to see the known particles occasionally disappear and be replaced by invisible hidden particles.”
“We do not know what dark matter is, but if it has anything to do with any scalar particles, it may be older than the Big Bang,” says astrophysicist Tommi Tenkanen at the Johns Hopkins University, who was not part of a 2019 University of Tokyo study that proposed the axion as a candidate for dark matter. The only fundamental scalar quantum field that has been observed in nature is the Higgs field-a field of energy that is thought to exist in every region of the universe.
“At first, we thought it was absurd,” said theoretical physicist Asimina Arvanitaki, at the Perimeter Institute for Theoretical Physics, who proposes that black holes can be thought of as nature’s particle accelerators, and how we may be able to discover new particles through detection of the gravitational waves black holes create. “I’m not surprised. How else could you respond to the idea that black holes generate swirling clouds of planet-sized particles that could be the dark matter thought to hold galaxies together? We tend to think about particles as being tiny but, theoretically, there is no reason they can’t be as big as a galaxy.”
“If dark matter were truly a remnant of the Big Bang, then in many cases researchers should have seen a direct signal of dark matter in different particle physics experiments already,” says astrophysicist Tommi Tenkanen at the Johns Hopkins University.