Something strange has always puzzled scientists: if the universe's natural tendency is toward disorder, how did it end up creating galaxies, stars, planets, and eventually life? It's a question so tricky that even Albert Einstein called the second law of thermodynamics — the rule saying disorder always increases — one of the most fundamental principles in all of nature. Now, a mathematician in London may have found a surprising new answer.
Professor Ginestra Bianconi at Queen Mary University of London has published a study in the journal Physical Review D that explores how the universe can build complexity while still following the rules. Her work centers on something called the Gravity from Entropy theory, or GfE for short. Entropy is a scientific word for disorder — the idea that things naturally fall apart rather than come together. But Bianconi's research suggests something curious: while the total entropy of the entire universe does increase over time (just as the rules say it should), the entropy in each little piece of space actually decreases. Local pockets of space become more ordered, not less.
Think of it like an ice cube tray full of water. Left alone, the whole kitchen gets slightly warmer as the ice melts — that's total entropy going up. But inside the tray, the water molecules are locking into an orderly crystal pattern — entropy going down in that one spot. The universe does something similar on a cosmic scale. As space expands, new room is created, and the disorder gets spread thinner while small regions become more organized.
This builds on groundbreaking work from the 1970s by Jacob Bekenstein and Stephen Hawking. Those scientists discovered that even black holes — objects so strange they seem to break every other rule — obey the laws of thermodynamics. They have entropy and even emit faint thermal radiation. Bianconi's new framework takes that idea further, suggesting gravity itself might emerge from the information encoded in spacetime geometry — a deep connection between how the universe is built and how energy and heat behave.
One exciting part of the theory is that it predicts a naturally occurring dark energy term. Dark energy is the mysterious force that seems to be pushing the universe to expand faster and faster. In Bianconi's model, this dark energy emerges naturally from the math rather than having to be added in by hand.
The work is still theoretical, but Bianconi says it could eventually help bridge gaps between Einstein's theory of gravity, quantum mechanics, and cosmology — four fields that have long struggled to work together. "This work reveals how the Gravity from Entropy theory can tackle the challenging question of reconciling the second law of thermodynamics with the emergence of complexity in our universe," she said. While the universe's overall tendency toward disorder hasn't been broken, it turns out there's room inside it for pockets of order, complexity, and perhaps even life to emerge.