A holographic universe is a theory that suggests that the three-dimensional world we perceive is actually a projection of information stored on a two-dimensional surface. This means that all the information and complexity of our universe could be contained on a two-dimensional surface.
The holographic universe theory is based on the idea that the universe is like a hologram, which is a three-dimensional image projected from a two-dimensional surface. In the same way, the information and complexity of our universe could be projected from a two-dimensional surface, such as the boundary of the universe.
One of the main pieces of evidence for the holographic universe theory is the holographic principle, which was proposed by physicist Leonard Susskind and physicist Gerard 't Hooft. This principle states that the information in a volume of space can be represented by a surface that surrounds it. Other evidence comes from studies of black holes and the laws of thermodynamics.
The holographic universe theory is still a developing theory and is not yet widely accepted in the scientific community. However, it is closely related to other theories such as string theory and the theory of loop quantum gravity, which also attempt to explain the nature of space and time at a fundamental level.
At this time, there is no empirical evidence that definitively proves the holographic universe theory. However, ongoing research and advancements in technology may provide further insights into the nature of our universe and potentially support or disprove this theory in the future.