The start of the Universe should be modeled not as a Big Bang but more like water freezing into ice, according to a team of theoretical physicists at the University of Melbourne and RMIT University that
could our revolutionized our understanding of the nature of the
Universe. The key, they propose, is to be found in the cracks and
crevices common to all crystals.
"Albert Einstein
assumed that space and time were continuous and flowed smoothly, but we
now believe that this assumption may not be valid at very small
scales," said Project lead researcher James Q. Quach, of the University
of Melbourne school of physics. “A new theory, known as quantum
graphity, suggests that space may be made up of indivisible building
blocks, like tiny atoms. These indivisible blocks can be thought about
as similar to pixels that make up an image on a screen. The challenge
has been that these building blocks of space are very small, and so
impossible to see directly.”
“Think of the early universe
as being like a liquid,” Quach added. “Then as the universe cools, it
‘crystallizes’ into the three spatial and one time dimension that we see
today. Theorized this way, as the Universe cools, we would expect that
cracks should form, similar to the way cracks are formed when water
freezes into ice.”
RMIT University research team member Associate Professor Andrew
Greentree said some of these defects might be visible. “Light and other
particles would bend or reflect off such defects, and therefore in
theory we should be able to detect these effects."
These structures should have observable background-independent
consequences, including scattering, double imaging, and gravitational
lensing-like effects, the scientists wrote in their paper. The team has
calculated some of these effects and if their predictions are
experimentally verified, the question as to whether space is smooth or
constructed out of tiny indivisible parts will be solved once and for
all.
Source: The Daily Galaxy via http://www.kurzweilai.net, and Physical Review
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