Not if you go by results from the gravitational waves collision.
While last year’s discovery of gravitational waves from colliding neutron stars was earth-shaking, it won’t add extra dimensions to our understanding of the universe—not literal ones, at least.
University of Chicago astronomers found no evidence for extra spatial dimensions to the universe based on the gravitational wave data. Their research, published in the Journal of Cosmology and Astroparticle Physics, is one of many papers in the wake of the extraordinary announcement last year that LIGO had detected a neutron star collision.
It appears for now that the universe has the same familiar dimensions—three in space and one of time—even on scales of a hundred million light-years.
But this is just the beginning, scientists said. “There are so many theories that until now, we didn’t have concrete ways to test,” Fishbach said. “This changes how a lot of people can do their astronomy.”
Louise Lerner, “Gravitational waves provide dose of reality about extra dimensions” at Phys.org
No but the extra dimensions are those of imperishable belief. They could birth new universes if they existed in reality; as it is, they do so only in imagination.
See also: At Nature: How gravitational waves might help explain fundamental cosmology. But do they exist?
and
Are there more than four dimensions? Physicist Rob Sheldon explains
Extra dimensions are fun to imagine though: