An international team of scientists from the UK, Canada and Italy has provided evidence that suggest that Universe could be a hologram.
Published in Physical Review Letters, the study explains how space and time emerged. The idea of holographic universe isn’t new as Theoretical physicists and astrophysicists first explored this concept in the 1990s. Through their latest study, researchers have published observational evidence to support a 2D holographic explanation of the universe. Continued work in this direction could lead to a functioning theory of quantum gravity, a theory that harmonizes quantum mechanics with Einstein’s theory of gravity, researchers have said.
Researchers from the University of Waterloo, Perimeter Institute for Theoretical Physics, University of Southampton (UK), INFN, Lecce (Italy) and the University of Salento (Italy) are proposing a different model of the Big Bang using the theory of holographic universe. This version of the Big Bang is different from the more popularly accepted model that relies on gravity and inflation. Researchers add that each of these Big Bang models makes distinct predictions and that they will be in a position to test through refined data and observations over the course of next five years.
“The key to understanding quantum gravity is understanding field theory in one lower dimension,” said said Niayesh Afshordi, professor of physics and astronomy at the University of Waterloo and Perimeter Institute, and lead author in the study. “Holography is like a Rosetta Stone, translating between known theories of quantum fields without gravity and the uncharted territory of quantum gravity itself.”
Holography, with its more simplified approach, allows the researchers to study the dense conditions of quantum gravity during the Big Bang at its boundary, which provides as much information as studying the Big Bang itself.