The concept of emergent gravity challenges traditional views by proposing that gravity is not a fundamental force but an emergent phenomenon arising from the microscopic structure of spacetime. This theory suggests that gravity emerges from the collective behavior of quantum information, offering a novel approach to understanding cosmic phenomena.
In 2009, theoretical physicist Erik Verlinde introduced the idea that gravity results from the entropic rearrangement of information within spacetime. He argued that gravity is a consequence of the universe's tendency to maximize entropy, rather than a fundamental force acting at a distance. This perspective has led to significant discussions and further research in the field of theoretical physics.
Recent developments have expanded on Verlinde's work. In February 2025, Daniel Carney and his colleagues presented quantum models supporting the emergent gravity framework. Their research suggests that Newton's law of gravity might arise from the free energy extremization of qubits, offering a fresh perspective on the origins of gravity. This work opens up exciting possibilities for experimental tests and could revolutionize our understanding of the universe's fundamental forces.
Emergent gravity also provides a potential explanation for phenomena traditionally attributed to dark matter. By modifying the theory of gravity, researchers propose that effects observed in galaxies and galaxy clusters could be explained without invoking unseen particles. This approach offers a compelling alternative to the dark matter hypothesis, prompting further investigation into the nature of the cosmos.
Despite its promising implications, emergent gravity faces challenges in reconciling with existing observations. Some studies suggest that while the theory aligns with certain galactic behaviors, it encounters discrepancies at larger scales, such as in galaxy clusters. These inconsistencies highlight the need for further refinement and testing of the emergent gravity framework.
The ongoing research into emergent gravity represents a significant shift in theoretical physics, encouraging scientists to explore the universe's fundamental nature through the lens of quantum information and entropy. As this field evolves, it may provide deeper insights into the mysteries of dark matter, dark energy, and the very fabric of spacetime.