Mathematician Offers New Solution to a Fundamental Cosmic Paradox

A fundamental tension exists in physics between the second law of thermodynamics and the emergence of cosmic complexity. While the second law dictates that total entropy in an isolated system must increase over time, our Universe has clearly moved toward greater structure and organization. Stars, galaxies, and life itself exist as evidence of this accumulation of order. For decades, this discrepancy has remained a major hurdle in theoretical cosmology.

Professor Ginestra Bianconi from Queen Mary University of London is addressing this problem with a new study published in Physical Review D. Her work examines Gravity from Entropy (GfE), a theory that treats gravity as an outcome of information processes within spacetime geometry. By applying statistical mechanics to this framework, she suggests a solution to the entropy paradox.

Bianconi found that while the total entropy of the Universe grows as it expands, the entropy per unit volume actually decreases. This distinction creates a mathematical path where global disorder can increase while local complexity thrives. The theory relies on the Quantum Geometric Relative Entropy, which measures the relationship between spacetime metrics.

Beyond resolving the entropy puzzle, this model generates a dynamical dark energy term at high energy scales. This feature provides a potential way for physicists to test the theory through future observations. While the work remains in its early theoretical stages, it marks a shift toward connecting general relativity, thermodynamics, and quantum mechanics.

By viewing gravity as an emergent property of informational tension, researchers may move closer to understanding how life and complex matter arise from the foundational laws of the cosmos. The implications of this research extend from the origins of the early Universe to the current expansion of space, offering a unified perspective on how order emerges from basic physical principles.