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sciencedaily said:
Soft Article:
http://www.sciencedaily.com/releases/2011/04/110420152059.htm
Journal Article:
http://prl.aps.org/abstract/PRL/v106/i10/e101101
sciencedaily said:Gravitational waves can't exist in one- or two-dimensional space. So Stojkovic and Mureika have reasoned that the Laser Interferometer Space Antenna (LISA), a planned international gravitational observatory, should not detect any gravitational waves emanating from the lower-dimensional epochs of the early universe.
Stojkovic, an assistant professor of physics, says the theory of evolving dimensions represents a radical shift from the way we think about the cosmos -- about how our universe came to be.
The core idea is that the dimensionality of space depends on the size of the space we're observing, with smaller spaces associated with fewer dimensions. That means that a fourth dimension will open up -- if it hasn't already -- as the universe continues to expand.
The concept of a one-dimensional early universe is based on theoretical models and mathematical equations that suggest the universe may have started with just one dimension and then expanded into the three dimensions we observe today. This is still a topic of debate and further research is needed to fully understand the origins of the universe.
One of the main pieces of evidence is the observed uniformity of the cosmic microwave background radiation. This suggests that the universe was once in a highly dense and uniform state, which aligns with the idea of a one-dimensional universe. Additionally, certain mathematical models and theories, such as string theory, propose the existence of extra dimensions that may have collapsed or been hidden during the expansion of the universe.
In our current understanding of the universe, we live in a three-dimensional space with an additional dimension of time. However, a one-dimensional universe would only have one spatial dimension, meaning objects and matter would only be able to move along a single axis. This would drastically change the laws of physics and the way we perceive the world around us.
Many theories, such as string theory and M-theory, propose the existence of extra dimensions beyond the three spatial dimensions we are familiar with. These dimensions may have been hidden or compactified during the early universe, and could potentially explain some of the mysteries of the universe, such as dark matter and dark energy.
The concept of a one-dimensional early universe is just one theoretical model that attempts to explain the origins of the universe. It is still being studied and debated among scientists and does not necessarily contradict the Big Bang theory. However, it does offer a different perspective and challenges our current understanding, leading to further research and exploration of the universe's beginnings.