12/26/2023 0 Comments Multiple strings theoryThink of walking on a tightrope, Nelson said. On a daily basis, we experience just four dimensions (up/down, left/right, forward/back, and time). String theory only works in a universe with at least 10 dimensions. James Halverson assistant professor of physics But we demonstrated a selection mechanism that could someday be an important piece of the final answer.” “We haven’t even come close to explaining why the world is the way it is. The vibrations of these strings create the different particles we observe, such as quarks or electrons. The idea that multiple versions of the universe could exist comes from string theory, a mathematical description of the universe that posits that everything is made up of strings too small for us to detect. “We’re trying to break down those barriers.” “When it comes to computational methods that have taken the rest of science by storm, whether it’s machine learning or network science, this branch of physics has been somewhat isolated from that,” said Brent Nelson, an associate professor of physics and associate dean of undergraduate affairs for the College of Science at Northeastern. But these same techniques are rarely applied to theoretical physics. In recent years, network science has been used to model disease epidemics, study connections in the human brain, and understand how ideas spread through social media. Now a group of theoretical physicists and network scientists at Northeastern have found a new way to tackle this problem: by analyzing these possible universes as a network. These questions might seem like part of a philosophical discussion, but some physicists consider their answers a necessary step in understanding the fundamental nature of our universe. Which bubble are we in? And why, of all the possible universes, did we end up in this one? ![]() And for each of these universes, the laws of physics are slightly different. Imagine that within each bubble, there is a universe. Imagine a boiling pot of water, with bubbles perpetually forming and rising to the top.
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