Vol. 7, Issue 1, Part B (2025)

This paper discusses the Maximum Entropy Production Principle (MEPP) as a thermodynamic principle to study the development of the large-scale structure (LSS) of the Universe. The study explores how self-organizing cosmic structures including filaments, clusters, and voids follow the laws of entropy production by considering both theoretical modeling and cosmological simulations in combination with statistical analysis. The findings determine that there is a steady growth in entropy density and production rate between the early epochs (z = 10) and the current epochs (z = 0) illustrating the process of increasing the thermodynamic complexity of the Universe. It was found that filaments are the prevailing sources of entropy generation and are responsible to about 55 percent of the total entropy generation because they are dynamic contributors to mass accretion and dissipation of energy. Correlation studies also found that the areas with moderate density differences (0-10) have the largest entropy efficiency with network analysis indicating that the nodes with moderate-high filament connectivity maximize entropic growth. These results confirm that the Universe develops as a self-organizing, nonequilibrium state that prefer the occurrence of states with the maximum production of entropy to offer a single thermodynamic treatment to the formation and stability of cosmic webs.