June 28, 2017 (Phys.org) -- Researchers from the Max Planck Institute for Gravitational Physics (Albert Einstein Institute/AEI) in Potsdam found that hidden dimensions -- as predicted by string theory -- could influence gravitational waves.
In a recently published paper they study the consequences of extra dimensions on these ripples in space-time, and predict whether their effects could be detected.
LIGO's first detection of gravitational waves from a black-hole binary in September 2015 has opened a new window onto the universe. Now it looks like with this new observing tool physicists cannot only trace black holes and other exotic astrophysical objects but also understand gravity itself.
"Compared to the other fundamental forces like, e.g. electromagnetism, gravity is extremely weak," explains Dr. David Andriot, one of the authors of the study. The reason for this weakness could be that gravity interacts with more than the three dimensions in space and one dimension in time that are part of our everyday experience.